His first wife was Ann Nancy McIntosh who was born March 14, 1796 in Williamstown, Glengarry County, Ontario. They married in 1818 in Williamsburg, Dundas County, Ontario.
William and Ann's children included:
Ann Truesdell (1819, married Henry Trickey, son of Christopher Trickey),
Benjamin Truesdell (1820, married Emeline Coleman),
Mary Truesdell (1823)
Huldah Gertrude Truesdell (1826, Oliver Cross)
Elizabeth Truesdell (1827, married Gilbert Wickware/Wickwire, son of Philip Wickware),
William Henry Truesdell (1832, married Alice Heaslip), and
Sarah Truesdell (1832, married James Struthers).
His second wife was Margaret Agnes McLeod who was born about1813 in Ireland.
William and Margaret's children included:
Margaret Agnes Truesdell (1837)
John Truesdell (1839)
The Battle of the Windmill was in November, 1838. Loyalists defeated an invasion attempt by Hunter Patriots, led by Nils von Schoultz, who were attempting to overthrow British rule. The battle was at a windmill two miles east of Prescott.
The first European settlements in Ontario were after the American Revolution when 5,000 loyalists left the new United States.