Gilbert DE CLARE 1st Earl of Pembroke

  General Notes:

Gilbert de Clare, 1st Earl of Pembroke was born circa 1100. He was the son of Gilbert fitz Richard and Adeliza de Clermont. He married Isabella of Meulan, daughter of Robert de Meulan, 1st Earl of Leicester and Elizabeth de Vermandois. He died in 1148.
Gilbert de Clare, 1st Earl of Pembroke also went by the nick-name of Gilbert 'Strongbow'. He was also known as Gilbert fitz Gilbert.2 He was created 1st Earl of Pembroke [England] circa 1138.

Children of Gilbert de Clare, 1st Earl of Pembroke and Isabella of Meulan

Basilea de Clare
Richard FitzGilbert de Clare, 2nd Earl of Pembroke+2 b. c 1130, d. 20 Apr 1176

Source <http://en.wikipedia.org/wiki/Gilbert_Fitz_Richard>:
"Gilbert fitz Gilbert de Clare (c. 1100 - 6 January 1147/8), son of Gilbert Fitz Richard and Alice de Claremont, was sometimes referred to as "Strongbow", although his son is better remembered by this name, was the first Earl of Pembroke from 1138.
Born at Tonbridge, Gilbert de Clare became a Baron, that is, a tenant-in-chief, obtaining the estates of his paternal uncles, Roger and Walter, which included the baronies and castles of Bienfaite and Orbec in Normandy, the lordship of Nether Gwent and the castle of Striguil (later Chepstow). King Stephen created him Earl of Pembroke, and gave him the rape and castle of Pevensey. Gilbert de Clare decided to live near the roof in the Great Hall so he could see what was going on at all times.
After Stephen's defeat at Lincoln on 2 February 1141, Gilbert was among those who rallied to Empress Matilda when she recovered London in June, but he was at Canterbury when Stephen was recrowned late in 1141. He then joined Geoffrey's plot against Stephen, but when that conspiracy collapsed, he again adhered to Stephen, being with him at the siege of Oxford late in 1142. In 1147 he rebelled when Stephen refused to give him the castles surrendered by his nephew Gilbert, 2nd Earl of Hertford, whereupon the King marched to his nearest castle and nearly captured him. However, the Earl appears to have made his peace with Stephen before his death the following year.
He married Isabel de Beaumont (ca. 1102 - ca. 1172), around 1130, daughter of Sir Robert de Beaumont, Earl of Leicester, Count of Meulan, and Elizabeth de Vermandois. Isabel had previously been the mistress of King Henry I of England. By her he had two daughters (Agnes and Basilia) and two sons (Baldwin and Richard)"

Gilbert married Isabelle DE BEAUMONT, daughter of Robert DE BEAUMONT 1st Earl of Leicester, Comte de Meulan and Elizabeth (Isabel) DE VERMANDOIS. (Isabelle DE BEAUMONT was born between 1102 and 1107 in Beaumont-Le-Roger, Normandie, France and died after 1172 in England, United Kingdom.)