“ID: I10504
Name: *Gilbert DE CLARE
Sex: M
Birth: 1180 in Hertford, Hertfordshire, England 1
Death: 25 OCT 1230 in Penrose, Brittany, France 1
Burial: Tewkesbury Abbey, Gloucester, England 1
Occupation: 4th Earl of Gloucester (or 1st) 1
Note:
5th Earl of Hertford
He was the son of Richard de Clare, 4th Earl of Hertford, from whom he inherited the Clare estates, from his mother, Amice Fitz Robert, 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 Isabella he later married. 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 Great Charter 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 Cranbourgh to Tewkesbury. His widow Isabel later married Richard Plantagenet, Earl of Cornwall & King of the Romans.
(From Wikipedia, the free encyclopedia)

Gilbert de Clare, Surety for the Magna Charta, eldest son, was born before 1182. He was granted some Welsh Lordships in 1210-11 by King John, and fortified the Castle of Beulth in Wales. Shortly afterwards he took up arms with the Barons against the King, in the interest of the new laws, and was elected one of the celebrated Sureties for the observance of the Magna Charta, and was excommunicated personally. Gilbert de Clare married Isabel le Mareschal, daughter of William, first Earl of Pembroke, Protector of England, and his wife Isabel de Clare. He died Oct. 25, 1230, and was buried in the chair of Tewksbury Abbey.
(Kin of Mellcene Thurman Smith, page 160)


Father: *Richard DE CLARE b: 1162 in Tonbridge Castle, Kent, England
Mother: *Amice Fitz WILLIAM b: 1160

Marriage 1 *Isabella MARSHALL b: 9 OCT 1200 in Tewkesbury, Gloucestershire, England
Married: 9 OCT 1217 in Tewkesbury Abbey, Gloucester, England 1
Children
Amicia DE CLARE b: 27 MAY 1220 in Usk, Monmouthshire, Wales
*Richard DE CLARE b: 4 AUG 1222 in Monmouthshire, Wales
*Isabel DE CLARE b: 8 NOV 1226 in Gloucestershire, England
William DE CLARE b: 18 MAY 1228 in Gloucestershire, England

Sources:
Title: Wikipedia
”