The St. John Genealogy Project
Origin and Ancestry DNA Database & Electronic Archive
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 MaleWilliam Sinclair, 6th Baron of Rosslyn |
| Birth | abt. 1240 | |
| Death | 1297 | Tower of London, London, England, UK  |
| Burial | ||
| Marriage | abt. 12700 | |
| Father | Henry Sinclair, 5th Baron of Rosslyn | F400259 Group Sheet | |
| Mother | Margaret de Mar, dau. of Earl of Mar | F400259 Group Sheet | |
| Male + Henry Sinclair, 7th Baron of Rosslyn; led Knights Templars to victory at Bannockburn |
| Birth | abt. 1275 | |
| Death | 1336 | |
| Burial | ||
| Spouse | Alice de Fenton | F400261 | |
| Marriage | abt. 1295 | |
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Female