United Empire Loyalists Re-United

I am researching my great-grandmother's family and I have an enormous brick wall as far as her mother, Marie, who was born in Quebec about 1780 . She married John Freisman and they had one child in Quebec before coming to Niagara. If the censuses are correct, John Freisman was born in England. I can't find any records of their marriage in the Drouin Collection.

Their daughter, Elizabeth, was born about 1795 in Quebec (she said she was 50 in 1851 census of Niagara Twp. and her death record says her age was 97 in 1891) and I can't seem to find any record of her baptism in the Drouin collection either. There is the baptism of John Freisman, son of John and Maria Freisman on Aug.16, 1807 at Fort George in Niagara. The Freisman family didn't apply for a Loyalist grant when they came to Niagara, so I am thinking they came for the opportunity to own land. Their daughter, Sarah, married Benjamin Haines about 1836. Two of the children, Peter and Elizabeth, never married. John married and moved to Canboro Twp., Haldimand Cty.

From my research, I've learned that there was another Freisman family who immigrated from Holland in the later 19th century. I doubt that there is any connection to them.