The Union Act, 1840 had merged the two provinces of Upper Canada and Lower Canada into the Province of Canada, with a single Parliament. The separate parliaments of Lower Canada and Upper Canada were abolished.[1] The Union Act provided that the pre-existing electoral boundaries of Upper Canada would continue to be used in the new Parliament, unless altered by the Union Act itself.[2]
That the third of the said counties be hereafter called by the name of the county of Dundas; which county is to be bounded on the east by the westernmost boundary line of the county of Stormont, on the south by the river St. Lawrence, and on the west by the easternmost boundary line of the late township of Edwardsburgh, running north twenty-four degrees west until it intersects the Ottawa or Grand river, thence descending the said river until it meets the northwesternmost boundary of the county of Stormont. The said county of Dundas is to comprehend all the islands in the said river St. Lawrence nearest to the said county, in the whole or greater part fronting the same.[4]
The county was subsequently defined by a statute of Upper Canada in 1798:
That the townships of Williamsburg, Matilda, Mountain, and Winchester, with such of the islands in the river Saint Lawrence as are wholly or in greater part opposite thereto, do together constitute and form the county of Dundas.[5]
Since the Union Act did not change the boundaries of Dundas, the new electoral district continued to use those boundaries.
Members of the Legislative Assembly
Dundas had one member in the Legislative Assembly. The following are the representatives from 1841 to 1866:
^Proclamation, Lieutenant Governor John Graves Simcoe, July 16, 1792; reprinted in Statutes of the Province of Upper Canada; Together with Such British Statutes, Ordinances of Quebec, and Proclamations, as Relate to the Said Province (Kingston: F. M. Hill., 1831) p. 24.
This article incorporates text from this source, which is in the public domain: Proclamation, Lieutenant Governor John Graves Simcoe, July 16, 1792 This article incorporates text from this source, which is in the public domain: The Statutes of Upper Canada to the Time of Union, Revised and Published by Authority, Vol. I - Public Acts (Toronto: Robert Stanton, Queen's Printer, 1843).