Sybilla Marshall1

F, b. circa 1201
     Sybilla was born circa 1201 in Pembroke, Pembrokeshire, Dyfed, Wales, at Pembroke Castle. She was the daughter of William Marshall 4th Earl of Pembroke. and Isabel Fitz Gilbert de Clare. Sybilla married William de Ferrers 5th Earl of Derby before 14 May 1219.2

Citations

  1. [S793] Thelma Romaine Beery, William Marshal, 1st Earl of Pembroke, Sibyl (or Sybilla) Marshal (c. 1201 - before 1238), married William de Ferrers, 5th Earl of Derby - http://en.wikipedia.org/wiki/Hugh_Bigod,_3rd_Earl_of_Norfolk.
  2. [S791] Kimball G Everingham, Magna Carta Ancestry, page 321.