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Descendants of William 6th Lord of Rosslyn Sinclair

1 William 6th Lord of Rosslyn Sinclair Born: in Rosslyn Castle, Roslin, Midlothian, Scotland Died: 1297 in prisoner in Tower of London, Middlesex, England + Matilda of Orkney Born: in Orkney, Orkney Islands, Scotland [Not Proven]

. 2 Annabel Sinclair Born: in Rosslyn Castle, Roslin, Midlothian, Scotland Died: in Wemyss, Fifeshire, Scotland + David Wemyss Born: in Wemyss, Fifeshire, Scotland Died: in Wemyss, Fifeshire, Scotland

 

Sir William Sinclair of Roslin was granted a charter by Alexander II 14 September 1280 upon the resignation of Henry de Roskelyn (perhaps Sir William's father in law). He married first Amicia (probable daughter of Henry de Roskelyn. He opposed Edward I's invasion of Scotland 1296-99. He probably died as a prisoner in the Tower of London. 

Burke's Peerage does not mention a second marriage to Matilda of Orkney, but many believe it to be true.

Burke's Peerage states that the parent of William Sinclair is Robert Sinclair, a Norman, and not Henry Sinclair of Rosslyn as other places state. 

Source:
Charles Mosley, editor, Burke's Peerage, Baronetage & Knightage, 107th edition, 3 volumes (Wilmington, Delaware, U.S.A.: Burke's Peerage (Genealogical Books) Ltd, 2003), volume 1, page 642.
Hay, Richard Augustine,. Genealogie [sic] of the Sainteclaires of Rosslyn. Genealogical works, by Father Richard Augustine Hay, Prior of St. Piermont Genealogie of the Sainteclaires of Rosslyn, including the Chartulary of Rosslyn. Edinburgh: T.G. Stevenson, 1835. [Available on Google Books.]

NOTE: Some dates are estimates.

NOTE: Some information from another researcher. Not yet verified by me.