William Sinclair, 2nd Earl of Caithness

William Sinclair, 2nd Earl of Caithness (1459 – 9 September 1513) was a Scottish nobleman

Lord Caithness was born at Ravenscraig Castle, Kirkcaldy, Scotland second son to William Sinclair, 1st Earl of Caithness and Marjory Sutherland.

He married Margaret Keith, daughter of Sir Gilbert Keith of Inverugie.

He fought and died in the Battle of Flodden.

By Margaret Keith, Lord Caithness had two children:

Caithness may have had a third child, Margaret, according to some sources. Dame Margaret Sinclair, according to these sources, married Sir Thomas Kirkpatrick. They had no children.

...
Wikipedia