Amice FitzWilliam, 4th Countess of Gloucester, b. 1160 in Tewkesbury, Gloucestershire, England, d. 1 January 1224/5 in England, She became Countess of Gloucester, 1217 in Gloucester, Gloucestershire, England

Father: William "Mafonache" Fitzrobert, b. ca. 23 November 1116 in Gloucestershire, England, d. 23 November 1183, He acceded to Earl of Gloucester. 1147 in Gloucester, Gloucestershire, England
Mother: Hawise "De Beaumont", b. ca. 1111 in Leicestershire, England, d. 24 April 1197

Spouse: Richard de Clare, Earl of Hertford, b. 1162 in Tunbridge Castle, Kent, England, d. 30 December 1218, He became Earl of Hertford 1173 in Hertford, Hertfordshire, England

Father: Roger de Clare, Earl of Hertford, b. ca. 1116, d. 1173, He acceded to position of Earl of Hertford 1153 in Hertford, Hertfordshire, England
Mother: Maud de St. Hilary, b. 1132 in Burkenham, Norfolk, England, d. 24 December 1193 in Norfolk, England
He and his son, Gilbert, were both Magna Carta Sureties; present at the signing.
Married bef. 1182.

Children:

  1. Gilbert de Clare, Earl of Gloucester, b. 1182 in Hertford, Hertfordshire, England, m. Isabel Marshall, 9 October 1217, d. 25 October 1230 in Penrose, Brittany, France
  2. Richard (Roger) de Clare, b. ca. 1183
  3. Maud (Matilda) de Clare, b. ca. 1185, m. William de Braose (3), 1206, d. 1213

William "Mafonache" Fitzrobert, b. ca. 23 November 1116 in Gloucestershire, England, d. 23 November 1183, He acceded to Earl of Gloucester. 1147 in Gloucester, Gloucestershire, England

Father: Robert "the King's Son" De Caen, b. ca. 1090 in Caen, Normandy, France, d. 31 October 1147 in Bristol, Gloucestershire, England, He acceded to Earl of Gloucester, August 1122 in Gloucester, Gloucestershire, England
Mother: Mabel (Maud) Fitzhamon, b. 1094 in Gloucestershire, England, d. 1157 in Bristol, Gloucestershire, England

Spouse: Hawise "De Beaumont", b. ca. 1111 in Leicestershire, England, d. 24 April 1197

Father: Robert I de Beaumont, Earl of Leicester, b. ca. 1048, d. 5 June 1118
Mother: Amice de Gael
Married ca. 1150.

Children:

  1. Mabel Fitzrobert (2), b. ca. 1157
  2. Amice FitzWilliam, 4th Countess of Gloucester, b. 1160 in Tewkesbury, Gloucestershire, England, m. Richard de Clare, Earl of Hertford, bef. 1182, d. 1 January 1224/5 in England, She became Countess of Gloucester, 1217 in Gloucester, Gloucestershire, England
  3. Isabella de Clare, Countess of Gloucester, b. ca. 1165
  4. Robert Fitzwilliam, b. ca. 1168

Robert "the King's Son" De Caen, b. ca. 1090 in Caen, Normandy, France, d. 31 October 1147 in Bristol, Gloucestershire, England, He acceded to Earl of Gloucester, August 1122 in Gloucester, Gloucestershire, England

Father: Henry I "Beauclerc" King of England, b. September 1068 in Selby, Yorkshire, England, d. 1 December 1135 in Rouen, Normandy, France, He acceded to the throne of England, 2 August 1100 in Westminster Abbey, London, Middlesex, England, cause of death was overeating lampreys.
Mother: Sybilla Corbet
He was called Robert de Mellent and Robert fitzRoy (or fitzRoi). Sybilla Corbet was one of Henry's many wives and it is not certain she was Robert's mother.

He may have had two more sons: Robert and Richard.

Robert supported the Empress Matilda during most of the civil war that began after his father died without a "legitimate" heir. He was the commander in chief of Matilda's army. Robert was captured by Stephen's forces, but since Stephen had been captured by Matilda's, he was returned in an even exchange. As Matilda's support dwindled, Robert became unable to continue her cause.

Spouse: Mabel (Maud) Fitzhamon, b. 1094 in Gloucestershire, England, d. 1157 in Bristol, Gloucestershire, England

Father: Robert Fitz Hamon, He became Lord of Glamorgan. ca. 1105 in Glamorgan, England
Mother: Sibyl De Montgomery, b. ca. 1050
Married ca. 1105.

Children:

  1. Roger Fitzrobert, Bishop of Worcester, b. ca. 1107
  2. Hamon Fitzrobert, b. ca. 1110
  3. Richard Fitzrobert, Lord of Creully, b. ca. 1113
  4. William "Mafonache" Fitzrobert, b. ca. 23 November 1116 in Gloucestershire, England, m. Hawise "De Beaumont", ca. 1150, d. 23 November 1183, He acceded to Earl of Gloucester. 1147 in Gloucester, Gloucestershire, England
  5. Mabel Fitzrobert, b. ca. 1120
  6. Philip de Grey, b. ca. 1122 in Wooten Bassett, Wiltshire, England, m. Sedzilla (Cecily or Alice) de Berkeley, ca. 1150
  7. Maud Fitzrobert, b. ca. 1124 in Gloucestershire, England, m. Ranulph "De Gernon," Earl of Chester, d. 29 July 1189 in Chester, Cheshire, England