The 1st Parliament of Upper Canada was opened 17 September 1792. Elections in Upper Canada had been held in August 1792. All sessions were held at Navy Hall in Newark, later Niagara-on-the-Lake. This parliament was dissolved 1 July 1796.
This House of Assembly of the 1st Parliament of Upper Canada had five sessions 17 September 1792 to 3 June 1796:
References
1st Parliament of Upper Canada Wikipedia(Text) CC BY-SA