Family/Spouse: SINCLAIR, John. John (son of SINCLAIR, George 4th Earl Caithness and GRAHAM, Lady Elizabeth Countess of Caithness) was born about 1543; died in Sep 1575 in Girnigo Castle, Caithness, Orkney Islands, Scotland; was buried in Sinclair Aisle,Wick Churchyard, Wick Burgh, Caithness, Scotland. [Group Sheet] [Family Chart]