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Female Sibyl Marshal Click to view Sibyl Marshal in the family tree

Sibyl was born in Pembroke, Wales.  Sibyl's father was William the Protector Marshal and her mother was Isabel Fitz Richard Strongbow de Clare.  Her paternal grandfather was John FitzGilbert the Marshal and her paternal grandmother is Sibilla d'Evereaux de Salisbury; her maternal grandparents were Richard Strongbow FitzGilbert de Clare and Aoife (Eva) MacMurrough of Leinster. She had five brothers and four sisters, named William the Younger, Richard, Gilbert, Walter, Anselm, Isabella, Joane (Johanna), Maud and Eve.  She died on April 27th, 1245.


Sibyl's family with William III de Ferrers

‌Sibyl and William III were married in a religious ceremony before May 14th, 1219.  They had seven daughters named Alianore, Agnes, Isabel, Jean, Sybil, Agatha and Maud.

1 THE COMPLETE PEERAGE @ Vol IV p 199

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