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Biography

Sibyl Marshall was born 1209 to William Marshal, 1st Earl of Pembroke (1146-1219) and Isabel de Clare, 4th Countess of Pembroke (1172-1220) and died before 1238 of unspecified causes. She married William de Ferrers, 5th Earl of Derby (c1193-1254) 14 May 1219 JL .




Children


Offspring of William de Ferrers, 5th Earl of Derby (c1193-1254) and Sibyl Marshall
Name Birth Death Joined with
Agnes de Ferrers (?-1290) 1290 William de Vesci (?-c1253)
Isabel de Ferrers (-c1260)
Maud de Ferrers (-1298) 9999 England 12 March 1298 England William de Vivonne (-1259)
Sibyl de Ferrers
Joan de Ferrers (-1267)
Agatha de Ferrers (-1306)
Eleanor de Ferrers (-1274) 1274 Roger de Quincy (c1195-1264)






Footnotes (including sources)

‡ General
¶ Death
  • some sources (eg Wikipedia for her father) say "died 27 April 1245". This estimate assumes her husband was a widower when he remarried on 1238


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