I have an Anne (or Anna) Tousley born circa 1830 in Upper Canada. She married Guy Owen Weller and were living in North Dorchester Twp (near Oxford Co.) in 1851.I don't know if they were married there or in Clarke Twp where Guy had lived previously.
I have been looking for any references to the surname Tousley in the North Dorchester area and had come across your line in Oxford Co. Victory Sikes Tousley was a blacksmith and had come to Oxford Co c1800.Sikes Tousley was a major in the Oxford militia during the war of 1812.
Other names that I have come across are Ariel Tousley and Alanson Tousley.