William Sinclair, 1st Earl of Caithness
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William Sinclair, 1st Earl of Caithness, last Earl of Orkney, 2nd Lord Sinclair and 11th Baron of Roslin was a Norwegian and Scottish nobleman and the builder of Rosslyn Chapel, in Midlothian. Wikipedia
Born: 1410, Caithness, United Kingdom
Died: 1480 (age 70 years), Kirkcaldy, United Kingdom
Spouse: Marjory Sutherland (m. 1456) and Janet Yeman (m. ?–1480)
Parents: Egidia Douglas and Henry II Sinclair, Earl of Orkney
Grandchildren: John Sinclair, 3rd Earl of Caithness, Henry Sinclair, William Leslie, 3rd Earl of Rothes, and more
Great-grandparents: Euphemia de Ross, Archibald Douglas, 3rd Earl of Douglas, and William Sinclair, Lord of Roslin