William Sinclair, 1st Earl of Caithness

Scottish nobleman, last Jarl of Orkney; Lord Chancellor of Scotland (1410–1484)

Parents

• Egidia Douglas
• Henry II Sinclair

Children

• Oliver St Clair, 12th Baron of Roslin
• Susan Sinclair
• Eleanor Sinclair
• William Sinclair, 2nd Earl of Caithness
• Catherine Sinclair
• Lady Elizabeth Sinclair
• Katherine Sinclair
• Robert Sinclair
• Arthur Sinclair
• George Sinclair
• Alexander Sinclair
• William Sinclair, 2nd Lord Sinclair
• Sir David Sinclair
• Mariot Sinclair

Siblings

• Beatrice Sinclair

Partners

• Marjory Sutherland
• Lady Elizabeth Douglas
• Janet Yeman