James Sinclair was born on 14th July 1867 on Stronsay. He married Williamina  Brodie in 1890 on Stronsay.

Williamina's parents were  William Brodie and Margaret Miller.  She was born 21st October, 1865 on Stronsay

Their children were

• John Taylor Sinclair (1891-1917)
• William Brodie Sinclair (1894-1985)
• Jessie Fea Sinclair (1897-1918)
• James Alexander Sinclair (1900-1925)
• Robert Sinclair  (b. 1903)
• Edward Sinclair (1907-1980)