Sir William Marshal, 1st Earl of Pembroke 1146–1219

Sir William Marshal, 1st Earl of Pembroke, 1146–1219 (aged 73 years)

Name

Sir William Marshal, 1st Earl of Pembroke

Name: Sir William /Marshal, 1st Earl of Pembroke/
Given names: Sir William
Surname: Marshal, 1st Earl of Pembroke

Gender Male

Events of close relatives
Birth	May 12, 1146 40 19 Rockley, Marlborough, Wiltshire, England
Residence	Address line 1: Newbury
Birth of a sister	Mary Marshal 1150 Pembroke, Pembrokeshire, Wales
Birth of a sister	Maud FitzJohn Marshall about 1152 Pembroke, Pembrokeshire, Wales
Birth of a sister	Dau Marshall about 1152
Birth of a brother	Anselm FitzJohn Marshall about 1154 Pembroke, Pembrokeshire, Wales
Birth of a brother	Henry FitzGilbert Marshall, Exeter 1156 Of, Pembroke, Pembrokeshire, Wales
Death of a mother	Sibilla Evreux about June 3, 1157 Pembroke, Pembrokeshire, Wales, UK
Birth of a sister	Margaret Marshal about 1165 Warwick, Warwickshire, England
Death of a father	John Marshall (born FitzGilbert), I, of Rockley, Marshal of the Horses before September 29, 1165 Rockley, Marlborough, Wiltshire, England
Burial of a father	John Marshall (born FitzGilbert), I, of Rockley, Marshal of the Horses 1165 Priory, Bradenstoke, Wiltshire, England
Marriage	Isabel FitzGilbert Marshal — View this family August 1189 (aged 43 years) London, Middlesex, England Note: Spouse: Isabel FitzGilbert Marshall (born de Clare), heiress of Pembroke / Strigoil
Birth of a son	William Marshal, 2nd Earl Pembroke (2nd creation), Surety of the Magna Carta April 1190 Pembroke, Pembroke, Wales
Birth of a daughter	Lady Maud Matilda de Warenne September 1192 Pembroke, Pembrokeshire, Wales
Death of a brother	John Marshall, II March 1193 Rockley, Marlborough, Wiltshire, England
Birth of a son	Richard Marshal, 3rd Earl of Pembroke 1194 Pembroke, Pembrokeshire, Wales
Birth of a daughter	Eva Baroness Abergavenny de Brewes 1194 Pembroke Castle, Pembrokeshire, Wales
Birth of a son	Earl Gilbert le Marshall, 4th Earl of Pembroke (Knight Templar) 1194 Hertfordshire, England, United Kingdom
Birth of a son	Sir Walter Marshall, 5th Earl of Pembroke about 1200 Pembroke, Pembroke, Wales
Birth of a daughter	Isabel Marshal October 9, 1200 Pembroke Castle, Pembrokeshire, Wales
Birth of a son	Anselm Marshal, 6th Earl of Pembroke 1204 Pembroke, Pembrokeshire, Wales
Baptism of a daughter	Isabel Marshal April 1206 Age: 5 St. Davids, Pimbrokeshire, Wales
Christening of a daughter	Isabel Marshal April 1206 Saint Davids, Pembroke, Wales, United Kingdom
Death of a brother	Henry FitzGilbert Marshall, Exeter October 1, 1206 Pembroke, Pembrokeshire, Wales
Birth of a daughter	Sybil de Ferrers 1209 Pembroke, Pembrokeshire, Wales
Birth of a daughter	Joane Munchensy 1210 Pembroke, Pembrokeshire, Wales
Marriage of a daughter	Gilbert 5th Earl of Hertford & 1st Earl of Gloucester de Clare, Earl of Hertford and Gloucester, Surety of the Magna Carta — Isabel Marshal — View this family October 9, 1217 England Note: Spouse: Isabel Marshal, Countess of Cornwall
Burial of a mother	Sibilla Evreux Priory of Bradenstoke, Wiltshire, England, UK
Baptism of a daughter	Sybil de Ferrers St. Davids, Pembrokeshire, England
Updated at	20 AUG 2018 01:59:20 GMT -0600
Death	May 14, 1219 (aged 73 years) Age: about 72-73 Caversham Manor, his estate in Henley, Oxfordshire on the Thames River near Reading, England
Burial	Round Chapel of Knights Temple, London, Middlesex, England
Nationality	Kingdom of England, England
Record ID number	Isabel FitzGilbert Marshal — View this family MH:F500505

Date differences

Family with parents
father	Links Birth: November 26, 1105 — Winterbourne Monkton, Marlborough, Wiltshire, England Marriage: 1143 — Pembroke, Pembrokeshire, Wales Occupation: Marshal of the Horses, a Minor Nobleman in the Court of King Stephen, Marshal of England Updated at: 3 APR 2020 13:10:21 GMT -0600 Updated at: 20 AUG 2018 01:59:16 GMT -0600 Death: before September 29, 1165 — Rockley, Marlborough, Wiltshire, England Burial: 1165 — Priory, Bradenstoke, Wiltshire, England Record ID number: MH:I502152 Record ID number: MH:F500714 Unique identifier: 5B7A66C43CAF379D62A2EBA11139859E Links Ancestors Compact tree Descendants Family book Fan chart Hourglass chart Interactive tree Pedigree Pedigree map Relationships Family with spouse Sibilla Evreux John Marshall, II Sir William Marshal, 1st Earl of Pembroke Mary Marshal Maud FitzJohn Marshall Dau Marshall Anselm FitzJohn Marshall Henry FitzGilbert Marshall, Exeter Margaret Marshal John Marshall (born FitzGilbert), I, of Rockley, Marshal of the Horses 1105–1165 Birth: November 26, 1105 — Winterbourne Monkton, Marlborough, Wiltshire, England Death: before September 29, 1165 — Rockley, Marlborough, Wiltshire, England
mother	Links Birth: November 27, 1126 — Old Sarum (Salisbury), Wiltshire, England Marriage: 1143 — Pembroke, Pembrokeshire, Wales Updated at: 3 APR 2020 13:10:22 GMT -0600 Updated at: 20 AUG 2018 01:59:16 GMT -0600 Death: about June 3, 1157 — Pembroke, Pembrokeshire, Wales, UK Burial: Priory of Bradenstoke, Wiltshire, England, UK Record ID number: MH:I502153 Record ID number: MH:F500714 Unique identifier: 5B7A66C43CAF379D62A2EBA11139859E Links Ancestors Compact tree Descendants Family book Fan chart Hourglass chart Interactive tree Pedigree Pedigree map Relationships Family with spouse John Marshall (born FitzGilbert), I, of Rockley, Marshal of the Horses John Marshall, II Sir William Marshal, 1st Earl of Pembroke Mary Marshal Maud FitzJohn Marshall Dau Marshall Anselm FitzJohn Marshall Henry FitzGilbert Marshall, Exeter Margaret Marshal Sibilla Evreux 1126–1157 Birth: November 27, 1126 — Old Sarum (Salisbury), Wiltshire, England Death: about June 3, 1157 — Pembroke, Pembrokeshire, Wales, UK
Marriage	Marriage — 1143 — Pembroke, Pembrokeshire, Wales
2 years elder brother	Links Birth: about 1144 38 17 — of, Pembroke, Pembrokeshire, Wales Occupation: Earl Marshal Updated at: 3 APR 2020 13:10:20 GMT -0600 Death: March 1193 — Rockley, Marlborough, Wiltshire, England Burial: Bradenstoke, Gloucestershire, England Record ID number: MH:I502154 Links Ancestors Compact tree Descendants Family book Fan chart Hourglass chart Interactive tree Pedigree Pedigree map Relationships John Marshall, II 1144–1193 Birth: about 1144 38 17 — of, Pembroke, Pembrokeshire, Wales Death: March 1193 — Rockley, Marlborough, Wiltshire, England
2 years himself	Links Birth: May 12, 1146 40 19 — Rockley, Marlborough, Wiltshire, England Marriage: August 1189 — London, Middlesex, England Updated at: 20 AUG 2018 01:59:20 GMT -0600 Death: May 14, 1219 — Caversham Manor, his estate in Henley, Oxfordshire on the Thames River near Reading, England Burial: Round Chapel of Knights Temple, London, Middlesex, England Nationality: Kingdom of England, England Record ID number: MH:I501511 Record ID number: MH:F500505 Unique identifier: 5aa3f3e2acb151e8ac8040b034f73a79 Links Ancestors Compact tree Descendants Family book Fan chart Hourglass chart Interactive tree Pedigree Pedigree map Relationships Family with spouse Isabel FitzGilbert Marshal William Marshal, 2nd Earl Pembroke (2nd creation), Surety of the Magna Carta Lady Maud Matilda de Warenne Richard Marshal, 3rd Earl of Pembroke Eva Baroness Abergavenny de Brewes Earl Gilbert le Marshall, 4th Earl of Pembroke (Knight Templar) Sir Walter Marshall, 5th Earl of Pembroke Isabel Marshal Anselm Marshal, 6th Earl of Pembroke Sybil de Ferrers Joane Munchensy Sir William Marshal, 1st Earl of Pembroke 1146–1219 Birth: May 12, 1146 40 19 — Rockley, Marlborough, Wiltshire, England Death: May 14, 1219 — Caversham Manor, his estate in Henley, Oxfordshire on the Thames River near Reading, England
5 years younger sister	Links Birth: 1150 44 23 — Pembroke, Pembrokeshire, Wales Updated at: 3 APR 2020 13:10:23 GMT -0600 Record ID number: MH:I502532 Links Ancestors Compact tree Descendants Family book Fan chart Hourglass chart Interactive tree Pedigree Pedigree map Relationships Mary Marshal 1150–… Birth: 1150 44 23 — Pembroke, Pembrokeshire, Wales
3 years younger sister	Links Birth: about 1152 46 25 — Pembroke, Pembrokeshire, Wales Updated at: 3 APR 2020 13:10:24 GMT -0600 Death: 1242 — England Record ID number: MH:I502155 Links Ancestors Compact tree Descendants Family book Fan chart Hourglass chart Interactive tree Pedigree Pedigree map Relationships Maud FitzJohn Marshall 1152–1242 Birth: about 1152 46 25 — Pembroke, Pembrokeshire, Wales Death: 1242 — England
1 year younger sister	Links Birth: about 1152 46 25 Updated at: 3 APR 2020 13:10:24 GMT -0600 Record ID number: MH:I502533 Links Ancestors Compact tree Descendants Family book Fan chart Hourglass chart Interactive tree Pedigree Pedigree map Relationships Dau Marshall 1152–… Birth: about 1152 46 25
3 years younger brother	Links Birth: about 1154 48 27 — Pembroke, Pembrokeshire, Wales Updated at: 20 AUG 2018 01:59:32 GMT -0600 Death: December 22, 1245 — Chepstow, Monmouthshire, England Record ID number: MH:I502156 Links Ancestors Compact tree Descendants Family book Fan chart Hourglass chart Interactive tree Pedigree Pedigree map Relationships Anselm FitzJohn Marshall 1154–1245 Birth: about 1154 48 27 — Pembroke, Pembrokeshire, Wales Death: December 22, 1245 — Chepstow, Monmouthshire, England
3 years younger brother	Links Birth: 1156 50 29 — Of, Pembroke, Pembrokeshire, Wales Updated at: 3 APR 2020 13:10:24 GMT -0600 Death: October 1, 1206 — Pembroke, Pembrokeshire, Wales Record ID number: MH:I502157 Links Ancestors Compact tree Descendants Family book Fan chart Hourglass chart Interactive tree Pedigree Pedigree map Relationships Henry FitzGilbert Marshall, Exeter 1156–1206 Birth: 1156 50 29 — Of, Pembroke, Pembrokeshire, Wales Death: October 1, 1206 — Pembroke, Pembrokeshire, Wales
10 years younger sister	Links Birth: about 1165 59 38 — Warwick, Warwickshire, England Updated at: 3 APR 2020 13:10:26 GMT -0600 Death: after June 14, 1247 — Lincolnshire, England Burial: Wiltshire, England Record ID number: MH:I502534 Links Ancestors Compact tree Descendants Family book Fan chart Hourglass chart Interactive tree Pedigree Pedigree map Relationships Margaret Marshal 1165–1247 Birth: about 1165 59 38 — Warwick, Warwickshire, England Death: after June 14, 1247 — Lincolnshire, England

Family with Isabel FitzGilbert Marshal
himself	Links Birth: May 12, 1146 40 19 — Rockley, Marlborough, Wiltshire, England Marriage: August 1189 — London, Middlesex, England Updated at: 20 AUG 2018 01:59:20 GMT -0600 Death: May 14, 1219 — Caversham Manor, his estate in Henley, Oxfordshire on the Thames River near Reading, England Burial: Round Chapel of Knights Temple, London, Middlesex, England Nationality: Kingdom of England, England Record ID number: MH:I501511 Record ID number: MH:F500505 Unique identifier: 5aa3f3e2acb151e8ac8040b034f73a79 Links Ancestors Compact tree Descendants Family book Fan chart Hourglass chart Interactive tree Pedigree Pedigree map Relationships Family with spouse Isabel FitzGilbert Marshal William Marshal, 2nd Earl Pembroke (2nd creation), Surety of the Magna Carta Lady Maud Matilda de Warenne Richard Marshal, 3rd Earl of Pembroke Eva Baroness Abergavenny de Brewes Earl Gilbert le Marshall, 4th Earl of Pembroke (Knight Templar) Sir Walter Marshall, 5th Earl of Pembroke Isabel Marshal Anselm Marshal, 6th Earl of Pembroke Sybil de Ferrers Joane Munchensy Sir William Marshal, 1st Earl of Pembroke 1146–1219 Birth: May 12, 1146 40 19 — Rockley, Marlborough, Wiltshire, England Death: May 14, 1219 — Caversham Manor, his estate in Henley, Oxfordshire on the Thames River near Reading, England
wife	Links Birth: about 1172 — Pembroke, Pembrokeshire, Wales Marriage: August 1189 — London, Middlesex, England Occupation: Countess of Pembroke Updated at: 20 AUG 2018 01:59:34 GMT -0600 Death: March 7, 1220 — Pembroke, Pembrokeshire, Wales Burial: 1220 — Tintern Abbey, Tintern, Monmouthshire, England Record ID number: MH:I501512 Record ID number: MH:F500505 Unique identifier: 5aa3f3e2acb151e8ac8040b034f73a79 Links Ancestors Compact tree Descendants Family book Fan chart Hourglass chart Interactive tree Pedigree Pedigree map Relationships Family with spouse Sir William Marshal, 1st Earl of Pembroke William Marshal, 2nd Earl Pembroke (2nd creation), Surety of the Magna Carta Lady Maud Matilda de Warenne Richard Marshal, 3rd Earl of Pembroke Eva Baroness Abergavenny de Brewes Earl Gilbert le Marshall, 4th Earl of Pembroke (Knight Templar) Sir Walter Marshall, 5th Earl of Pembroke Isabel Marshal Anselm Marshal, 6th Earl of Pembroke Sybil de Ferrers Joane Munchensy Isabel FitzGilbert Marshal 1172–1220 Birth: about 1172 — Pembroke, Pembrokeshire, Wales Death: March 7, 1220 — Pembroke, Pembrokeshire, Wales
Marriage	Marriage — August 1189 — London, Middlesex, England
9 months son	Links Birth: April 1190 43 18 — Pembroke, Pembroke, Wales Occupation: Chief Justiciar of Ireland, Medieval English nobleman, 2nd Earl of Pembroke Updated at: 20 AUG 2018 01:59:35 GMT -0600 Death: April 6, 1231 — London, England Burial: April 15, 1231 — Temple Church, London, Middlesex, England Record ID number: MH:I501513 Links Ancestors Compact tree Descendants Family book Fan chart Hourglass chart Interactive tree Pedigree Pedigree map Relationships William Marshal, 2nd Earl Pembroke (2nd creation), Surety of the Magna Carta 1190–1231 Birth: April 1190 43 18 — Pembroke, Pembroke, Wales Death: April 6, 1231 — London, England
3 years daughter	Links Birth: September 1192 46 20 — Pembroke, Pembrokeshire, Wales Updated at: 20 AUG 2018 01:59:38 GMT -0600 Death: March 27, 1248 — (bur) Tintern Abbey, Chapel Hill, Monmouthshire, Wales Burial: Tintern Abbey, Chapel Hill, Monmouthshire, England Record ID number: MH:I501514 Links Ancestors Compact tree Descendants Family book Fan chart Hourglass chart Interactive tree Pedigree Pedigree map Relationships Lady Maud Matilda de Warenne 1192–1248 Birth: September 1192 46 20 — Pembroke, Pembrokeshire, Wales Death: March 27, 1248 — (bur) Tintern Abbey, Chapel Hill, Monmouthshire, Wales
2 years son	Links Birth: 1194 47 22 — Pembroke, Pembrokeshire, Wales Occupation: Seigneur, Comte, Sieur, de Longueville Updated at: 20 AUG 2018 01:59:36 GMT -0600 Burial: April 17, 1234 — Kilkenny, Kildare, Ireland Death: April 16, 1238 — Kilkenny, Castle, Kildare, Ireland Record ID number: MH:I501515 Links Ancestors Compact tree Descendants Family book Fan chart Hourglass chart Interactive tree Pedigree Pedigree map Relationships Richard Marshal, 3rd Earl of Pembroke 1194–1238 Birth: 1194 47 22 — Pembroke, Pembrokeshire, Wales Death: April 16, 1238 — Kilkenny, Castle, Kildare, Ireland
1 year daughter	Links Birth: 1194 47 22 — Pembroke Castle, Pembrokeshire, Wales Updated at: 20 AUG 2018 01:54:48 GMT -0600 Death: before 1246 — Llanthony Priory, Vale of Ewyas, Black Mountains, South Wales Record ID number: MH:I501516 Links Ancestors Compact tree Descendants Family book Fan chart Hourglass chart Interactive tree Pedigree Pedigree map Relationships Eva Baroness Abergavenny de Brewes 1194–1246 Birth: 1194 47 22 — Pembroke Castle, Pembrokeshire, Wales Death: before 1246 — Llanthony Priory, Vale of Ewyas, Black Mountains, South Wales
1 year son	Links Birth: 1194 47 22 — Hertfordshire, England, United Kingdom Updated at: 20 AUG 2018 01:59:40 GMT -0600 Death: June 27, 1241 — Hertford, Hertfordshire, England Burial: Temple Church, London, Middlesex, England Record ID number: MH:I501517 Links Ancestors Compact tree Descendants Family book Fan chart Hourglass chart Interactive tree Pedigree Pedigree map Relationships Earl Gilbert le Marshall, 4th Earl of Pembroke (Knight Templar) 1194–1241 Birth: 1194 47 22 — Hertfordshire, England, United Kingdom Death: June 27, 1241 — Hertford, Hertfordshire, England
7 years son	Links Birth: about 1200 53 28 — Pembroke, Pembroke, Wales Updated at: 20 AUG 2018 01:59:43 GMT -0600 Death: November 24, 1245 — Goodrich Castle, Herefordshire, England Burial: Tintern, Abbey, England Record ID number: MH:I501518 Links Ancestors Compact tree Descendants Family book Fan chart Hourglass chart Interactive tree Pedigree Pedigree map Relationships Sir Walter Marshall, 5th Earl of Pembroke 1200–1245 Birth: about 1200 53 28 — Pembroke, Pembroke, Wales Death: November 24, 1245 — Goodrich Castle, Herefordshire, England
9 months daughter	Links Birth: October 9, 1200 54 28 — Pembroke Castle, Pembrokeshire, Wales Christening: April 1206 59 34 — Saint Davids, Pembroke, Wales, United Kingdom Baptism: April 1206 59 34 — St. Davids, Pimbrokeshire, Wales Marriage: October 9, 1217 — England Marriage: March 30, 1231 — England Occupation: Countess of Hertford, Countess de Clare and Countess of Cornwall Updated at: 27 DEC 2019 09:04:54 GMT -0600 Death: January 17, 1240 — Berkhampstead Castle, Hertfordshire, England Burial: January 24, 1240 — Beauilieu Abbey, Beaulieu, Southampton, England Nationality: England Record ID number: MH:I501276 Record ID number: MH:F500416 Unique identifier: 5a85b8b43279e1e8ac8040b034f73a79 Record ID number: MH:F500506 Unique identifier: 5aa3f3e2f0f2c1e8ac8040b034f73a79 Links Ancestors Compact tree Descendants Family book Fan chart Hourglass chart Interactive tree Pedigree Pedigree map Relationships Family with spouse Gilbert 5th Earl of Hertford & 1st Earl of Gloucester de Clare, Earl of Hertford and Gloucester, Surety of the Magna Carta Agnes de Clare Amicia de Clare Amice de Clare Richard de Clare, 5th Earl of Hertford, 6th Earl of Gloucester Isabella of Gloucester and de Clare or Plantagenet William de Clare Agatha (twin) de Clare Gilbert de Clare Sir Gilbert Sinclair de Clare Family with spouse … … Henry Plantagenet Isabel Marshal 1200–1240 Birth: October 9, 1200 54 28 — Pembroke Castle, Pembrokeshire, Wales Death: January 17, 1240 — Berkhampstead Castle, Hertfordshire, England
4 years son	Links Birth: 1204 57 32 — Pembroke, Pembrokeshire, Wales Updated at: 20 AUG 2018 01:59:42 GMT -0600 Death: December 22, 1245 — Chepstow Castle, Monmouthshire, Wales Burial: Tintern Abbey, Tintern, Monmouthshire, Wales Record ID number: MH:I501520 Links Ancestors Compact tree Descendants Family book Fan chart Hourglass chart Interactive tree Pedigree Pedigree map Relationships Anselm Marshal, 6th Earl of Pembroke 1204–1245 Birth: 1204 57 32 — Pembroke, Pembrokeshire, Wales Death: December 22, 1245 — Chepstow Castle, Monmouthshire, Wales
6 years daughter	Links Birth: 1209 62 37 — Pembroke, Pembrokeshire, Wales Baptism: St. Davids, Pembrokeshire, England Updated at: 20 AUG 2018 01:59:45 GMT -0600 Death: before 1238 — Ashbourne, Derby, England Burial: Tintern Abbey, Tintern, Monmouthshire, England Record ID number: MH:I501519 Links Ancestors Compact tree Descendants Family book Fan chart Hourglass chart Interactive tree Pedigree Pedigree map Relationships Sybil de Ferrers 1209–1238 Birth: 1209 62 37 — Pembroke, Pembrokeshire, Wales Death: before 1238 — Ashbourne, Derby, England
2 years daughter	Links Birth: 1210 63 38 — Pembroke, Pembrokeshire, Wales Occupation: Countess of Pembroke Updated at: 20 AUG 2018 01:59:45 GMT -0600 Death: November 1234 — Pembroke, Pembrokeshire, Wales, United Kingdom Record ID number: MH:I501521 Links Ancestors Compact tree Descendants Family book Fan chart Hourglass chart Interactive tree Pedigree Pedigree map Relationships Joane Munchensy 1210–1234 Birth: 1210 63 38 — Pembroke, Pembrokeshire, Wales Death: November 1234 — Pembroke, Pembrokeshire, Wales, United Kingdom

Show all notes
Marriage	Spouse: Isabel FitzGilbert Marshall (born de Clare), heiress of Pembroke / Strigoil

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Extra information

Record ID number

MH:I501511

Unique identifier

5aa3f3e267ed81e8ac8040b034f73a79

Family navigator

Family with parents
father	John Marshall (born FitzGilbert), I, of Rockley, Marshal of the Horses 1105–1165
mother	Sibilla Evreux 1126–1157
elder brother	John Marshall, II 1144–1193
himself	Sir William Marshal, 1st Earl of Pembroke 1146–1219
younger sister	Mary Marshal 1150–…
younger sister	Maud FitzJohn Marshall 1152–1242
younger sister	Dau Marshall 1152–…
younger brother	Anselm FitzJohn Marshall 1154–1245
younger brother	Henry FitzGilbert Marshall, Exeter 1156–1206
younger sister	Margaret Marshal 1165–1247

Family with Isabel FitzGilbert Marshal
himself	Sir William Marshal, 1st Earl of Pembroke 1146–1219
wife	Isabel FitzGilbert Marshal 1172–1220
son	William Marshal, 2nd Earl Pembroke (2nd creation), Surety of the Magna Carta 1190–1231
daughter	Lady Maud Matilda de Warenne 1192–1248
son	Richard Marshal, 3rd Earl of Pembroke 1194–1238
daughter	Eva Baroness Abergavenny de Brewes 1194–1246
son	Earl Gilbert le Marshall, 4th Earl of Pembroke (Knight Templar) 1194–1241
son	Sir Walter Marshall, 5th Earl of Pembroke 1200–1245
daughter Family Gilbert 5th Earl of Hertford & 1st Earl of Gloucester de Clare, Earl of Hertford and Gloucester, Surety of the Magna Carta Agnes de Clare Amicia de Clare Amice de Clare Richard de Clare, 5th Earl of Hertford, 6th Earl of Gloucester Isabella of Gloucester and de Clare or Plantagenet William de Clare Agatha (twin) de Clare Gilbert de Clare Sir Gilbert Sinclair de Clare Family … … Henry Plantagenet	Isabel Marshal 1200–1240
son	Anselm Marshal, 6th Earl of Pembroke 1204–1245
daughter	Sybil de Ferrers 1209–1238
daughter	Joane Munchensy 1210–1234

Descendants

Sir William Marshal, 1st Earl of Pembroke(1146–1219)
- Isabel FitzGilbert Marshal1189