Gilbert de Clare, 4th Earl of Hertford, 5th Earl of Gloucester, was born 1180 to Richard de Clare, 4th Earl of Hertford (c1153-1218) and Amice FitzRobert, Countess of Gloucester (c1160-1220) and died 25 October 1230 of unspecified causes. He married Isabel Marshal (1200-1240) 9 October 1217 JL . Notable ancestors include Charlemagne (747-814), Hugh Capet (c940-996), William I of England (1027-1087), Alfred the Great (849-899). Ancestors are from the United Kingdom, France, Germany, England, Belgium, the Netherlands.


Offspring of Gilbert Clare and Isabel Marshal (1200-1240)
Name Birth Death Joined with
Agnes de Clare (1218-)
Amice de Clare (1220-1287)
Richard de Clare, 6th Earl of Hertford (1222-1262) 4 August 1222 15 July 1262 Megotta de Burgh
Maud de Lacy, Countess of Lincoln (1223-c1287)

Isabel de Clare (1226-1264) 2 November 1226 10 July 1264 Robert de Brus (c1210-1295)

William de Clare (1228-1258)
Gilbert de Clare (1229-)

Common ancestors of Gilbert de Clare, 5th Earl of Hertford (1180-1230) and Isabel Marshal (1200-1240)

  1. Adelaide de Vermandois (1064-1120)
  2. Adeline de Meulan (c1016-1081)
  3. Elizabeth de Vermandois (c1081-1131)
  4. Hugh de Vermandois (1053-1101)
  5. Robert de Beaumont (1049-1118)
  6. Roger I de Beaumont (1022-1094)

Footnotes (including sources)

‡ General