James Sedgwick was born in the Parish of Magheragall, County Antrim, Northern Ireland, United Kingdom of Great Britain and Ireland c 1796 to John Sedgwick. His step-mother was Agnes Agnew. The Sedgwick family lived on Lot 25, Ballymave, Parish of Magheragall, County Antrim, Northern Ireland.
A son of Peter Fraser Sr. b 1789 in Fort Augustus, Invernesshire, Scotland. At age 18, he is a drummer in the 10th Royal Veteran Battalion, arriving in Quebec in 1807. Transferred to 49th Regiment of Foot in 1810 as Private. By 1813, he is a Sergeant, serving in the 49th Regiment of Foot, under General Vincent in the Niagara Frontier.