William Sinclair, 1st Earl of Caithness

William Sinclair, 1st Earl of Caithness

William Sinclair, 1st Earl of Caithness, 3rd Earl of Orkney, Baron of Roslin (1410-1484) was a Scottish nobleman and the builder Rosslyn Chapel. He was the grandson of Scottish explorer Henry Sinclair, 1st Earl of Orkney.

{| border="2" align="center" |- |width="30%" align="center"|Preceded by:
Henry Sinclair |width="40%" align="center"|Earl of Orkney |width="30%" align="center"|Followed by:
Surrendered |- |width="30%" align="center"|Preceded by:
New Creation |width="40%" align="center"|Earl of Caithness |width="30%" align="center"|Followed by:
William Sinclair |}