Fletcher IN Ontario Canada

I looking for William Fletcher, born in Ontario, Canada Dec 20, 1798. Married Rebecca Van Deusen (born 1798 NY) about 1820. Also looking for his parents, John Fletcher, born 6/29/1777 in Grantham, NH, and Elizabeth Wood, born 2/27/1773 in Grantham, NH. I am wanting to verify that I am searching for the right ancestors of Hiel Alfred Fletcher, born about 1830 in Canada, died 9/21/1907 in Olive Twp, Ottawa Co, MI.