An American Family History

The Thomson Family of Leeds County, Ontario


also spelled Thompson


William Thomson was born about 1733 in Scotland. He married Agnes Birrel.

Agnes "Nancy" Thomson (1765, married John Kincaid),
William T. Thomson (1767, married Elizabeth Martin),
James Thomson (1770, married Margaret Austin),
John Thomson (1772)
Robert Thomson (1776)
Archibald Thomson (1779),
Benjamin Thomson (1783, married Rachel Polly Seeley, daughter of Peet Seeley), and
Thomas Thomson (1783, married Sarah Seeley, daughter of Peet Seeley).

James was assessed in Yonge Township in 1805.

During the War of 1812, Thomas Thomson served in the Leeds County Militia.

The first European settlements in Ontario were after the American Revolution when 5,000 loyalists left the new United States.


Leeds County, Ontario, Canada was first surveyed in 1792 in preparation for the United Empire Loyalists settlers. In 1850, Leeds County merged with Grenville to create theĀ United Counties of Leeds and Grenville.

William T. Thomson was born about 1767 in Ā Gargunnock, Stirlingshire, Scotland.

He married Elizabeth Martin. Elizabeth was born in 1768.

Agnes Thomson (1789, married John Harvey),
Jean Thomson (1791)
William Thomson (1792-1825)
James Thomson (1798, married Hannah Polly and Rachel Hagerman),
Archibald Thomson (1801, married Matilda Wickware),
Francis Winter Thomson (1802, married Christina Lang), and
Thomas Thomson (1804).

His second wife was Lois Dinsmore. Lois was born in 1784.

Joseph Dinsmore Thomson (1809, married Ruth Bowman)
Ruth Thomson (1811)
Margaret Thomson (1815)
Jeanette Thomson (1821)
John Kincaid Thomson (1821, married Nancy Root),
Andrew W. Whomson (1823, married Ellen McNeil)
Lois Thomson (1827)

William died in 1854 in Leeds County.


Benjamin Thompson married Rachel Polly Seeley.

Selee Thomson (1813, married Elizabeth Tyron)
Soloman Thomson (1813).

During the War of 1812, Benjamin Thompson served in the Leeds County Militia.




James Thompson was born January 1st, 1798, in the County of Stirling, Scotland. In 1801, his father and family emigrated to Canada, settling first in Lower Canada, but removing to the District of Johnstown in 1807. They found a permanent home in Escott, in which municipality Mr. Thompson continued to reside up to the date of his death, February 7th, 1879.

At the age of fifteen, Mr. Thompson joined the militia, and served during the War of 1812, being present at the capture of Ogdensburg. The ability of Mr. Thompson was repeatedly recognized by the electors, who made him a representative in the old District Council, and subsequently in the Counties Council. He also held the office of Justice of the Peace for many years.

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©Roberta Tuller 2023
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