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Male William (4th Baron of Rosslyn) Sinclair Click to view William (4th Baron of Rosslyn) Sinclair in the family tree

William (4th Baron of Rosslyn) was born about 1130.  William (4th Baron of Rosslyn)'s father was Henry (Sir) (3rd Baron of Rosslyn) Sinclair and his mother was Margaret Grathenay.  His paternal grandparents were Henry (Sir) (2nd Baron of Rosslyn) Sinclair and Rosabel Forteith of Strathearn.  He was an only child.  He died in 1214.


William (4th Baron of Rosslyn)'s family with Agnes (of March) Dunbar

They had a son named Henry.

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