Individual Details

Earl of Gloucester and Hertford.

http://www.brookfieldpublishing.com/Barons/Barons/baron_gilbert_de_clare.htm
GILBERT de CLARE, son of Surety Richard de Clare, and himself a Surety, was born about the year 1180. In June 1202 he was entrusted with the lands of Harfleur and Mostrevilliers. He was one of the Barons still opposing the arbitrary proceedings of the Crown. He championed Louis the Dauphin, fighting at Lincoln under the Baronial banner, and was taken prisoner by William Marshall, whose daughter he later married. He led an army against the Welsh in 1228 and captured Morgan Gam, who was released the next year. After an engagement in Brittany, he died on his return at Penros in that Duchy, 25 October 1230. His body was conveyed by way of Plymouth and Cranbourn to Tewkesbury. He was buried there before the High Altar 10 November 1230. He married Isabella, sister of William Marshall, the Surety, and daughter of William Marshall, the Protector, on 9 October 1217. She died 17 January 1239/40.


Wikipedia
Gilbert de Clare, 4th Earl of Hertford, 5th Earl of Gloucester (1180 – 25 October 1230) was the son of Richard de Clare, 3rd Earl of Hertford, from whom he inherited the Clare estates. He also inherited from his mother, Amice Fitz William, the estates of Gloucester and the honour of St. Hilary, and from Rohese, an ancestor, the moiety of the Giffard estates. In June 1202, he was entrusted with the lands of Harfleur and Montrevillers.

In 1215 Gilbert and his father were two of the barons made Magna Carta sureties and championed Louis "le Dauphin" of France in the First Barons' War, fighting at Lincoln under the baronial banner. He was taken prisoner in 1217 by William Marshal, whose daughter Isabel he later married on 9 October, her 17th birthday.

In 1223 he accompanied his brother-in-law, Earl Marshal, in an expedition into Wales. In 1225 he was present at the confirmation of the Magna Carta by Henry III. In 1228 he led an army against the Welsh, capturing Morgan Gam, who was released the next year. He then joined in an expedition to Brittany, but died on his way back to Penrose in that duchy. His body was conveyed home by way of Plymouth and Cranborne to Tewkesbury. His widow Isabel later married Richard Plantagenet, Earl of Cornwall & King of the Romans.

Birth	Ca 1182	Hertfordshire, England
Magna Carta Surety	15 Jun 1215	Magna Carta Surety - Baron
Marriage	9 Oct 1217	Tewkesbury Abbey, Gloucester, England - Isabel Marshal
Death	25 Oct 1230	PenPenrose, Brittany
Burial		Tewkesbury Abbey, Gloucester, England

Spouse	Isabel Marshal (1200 - )
Child	Sir Richard de Clare (1222 - 1262)

Father	Richard de Clare Magna Carta Baron (1153 - 1216)
Mother	Living