Thomas Sinclair (1838-1914) - the Ulster-Scot who penned the Ulster Covenant - Nelson's View

The Covenant Trail - Public Record Office of Northern Ireland

Sinclairs of Hopefield House

Celebrating the Ulster Covenant 1912-2007 - Ulster Society at Queen's University Belfast

Thomas Sinclair, Home Rule and Covenant - by David A. Murphy - PHSI Bulletin Volume 36

The Famous Faces of North Belfast (pdf) - page 10

Thomas Sinclair - Lion & Lamp Volume 24

Go to the Presbyterian Historical Society of Ireland website