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 the United Counties of Leeds and Grenville.
Thomas Smythe was born about 1758. He was the son of George Montague Smythe.
Thomas was a lieutenant in the King's Royal Regiment of New York.
Terrance Smyth (1791, married Eleanor Weatherhead, daughter of Samuel Weatherhead),
Henry George Smyth
Rosamond Smyth (married Thomas Sparham),
Mary Smyth (married John Purvis, son of Peter Purvis and Catherine Gardiner)
Marilla Smyth (married John M. Easton),
In the 1801 Elizabethtown census: Thomas, Lavinia, Rosanna George, Rachel, Mary, Terry and Sinthe.