| Notes |
- Known as Gilbert de Clare, 5th Earl of Hertford, Surety. He was also
the 3rd Earl of Glouchester.
The following is from Magna Charta Barons and Their American
Descendants, pp. 83-84:
"He was granted Welsh lordships in 1210-11 by King John, and fortified
the castle of Buelth, in Wales, but shortly afterwards, with his
father, took up arms with the Barons against the king in the interests
of civil and religious liberty, and was elected one of the celebrated
Sureties for the Magna Charta. He was excommunicated. He was one of
the Barons still opposing the arbitrary proceedings of the crown, who
championed Louis, the Dauphin, fought at Lincoln under the baronial
banner, and was taken prisoner by the Earl of Pembroke, the Protector
of England, and sent to Gloucester. Soon afterwards Gilbert made his
peace and married one of the five daughters, and coheiresses of her
five brothers, of the Protector. After the decease of his father, in
1218, he became the fifth Earl of Hertford, and after the death, in
1219, of Geoffrey de Mandeville, Earl of Essex, the second husband of
Isabel, the divorced wife of King John, sister of his mother, Lady
Amicia, daughters and coheiresses of William, Earl of Gloucester, he
became, in right of his aunt and his mother, Earl of Gloucester.
He m. Isabel Marshall, one of the daughters of William, Earl of
Pembroke, Protector of England.
(Source: Billy Polk)
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