A portion of an entry at the Niagara Settlers site:
Certificate of Edward McMichael dated at Newark (Niagara-on-the-Lake) on 15 Nov 1792 attached to the Upper Canada Land Petition of Jacob Beam
“I hereby certify that Jacob Beam formerly an Inhabitant of Sussex County in the Province of New Jersey...[Signed] Edwd McMichael. [Upper Canada Land Petitions NAC “B” Bundle 1, Petition Number 92b]
Mr. Mutrie's (of Niagara Settlers) website here and e-mail here.
Here's my example of working with Upper Canada Land Petitions.