The collection called the Upper Canada Sundries have now been digitized and are available online.
In October 1816, there are character references for a John Morey, of Burford twp, who is a free Black man and has a wife and eight children. According to this Oath of Allegiance, he would have been 19 years in the Province, so an arrival of about 1797.
UC Sundries, vol. 30, pp 13706-13708. microfilm reel C-4547. (online, find reel then scroll for pages)
1814 at Niagara.
Sep. 6. 1814, at Niagara, Mary d/o of John and Ann VAn Patten was baptized in the Anglican Church.
http://my.tbaytel.net/bmartin/niag-bap.htmSo quite likely the John Morey who married Mary Van Patten was a son of the original John Morey, since he already had 8 children in 1816.
There is a John Moray, age 83 in Brantford, on the 1851 census, most likely the old John Morey.
born US. On this census, they are enumerated as Indians, and not as Coloured, but in earlier records, John is identified as a Free Black man.
There is also a petition in 1841, in the collection called the Upper Canada Land Petitions, that request a patent for the lot granted to his wife Elizabeth. The petition names 8 children, and mentions that his wife Elizabeth is now deceased and his eldest child is about 40 years old. The petition was not recommended, but there is a further file in the Heir and Devisee Commission in 1842, for John Morey of Brantford. Quite likely this would be a very useful file. On microfilm at teh Archives of Ontario.
Have fun.