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Female Sibyl fitz Seward Click to view Sibyl fitz Seward in the family tree

Sibyl was born about 1009 in Northumberland,England.  Sibyl's father was Siward , Danish Earl of Notheumbria and her mother was Countess Aelfled of Berncia.  Her maternal grandfather was Earl Aldred of Bernicia of Northumbria. She had a brother named Waltheof II.  She was the older of the two children. She had two half-brothers and two half-sisters, named Waltheof, Waltheof II, Sibyl and Sibyl.  She died in 1040.


Sibyl's family with Duncan I MacCrinan , King of Albany

‌Sibyl and Duncan I were married in a religious ceremony about 1030.  They had two sons named Donald Bane and Malcolm III "Canmore".

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