Thompsons Ontario Michigan

Looking for information on the family of Ralph Cook
Thompson and his wife Salina. Ralph was born in Ontario in
1842; Salina was born in England between 1838 and 1842.
From 1870, they lived in Michigan, in Bay County,
West Bay City, Bay City and finally Clare Township,
Clare County. They had at least four children –
Ralph P, born about 1868, Lizzie, born about 1879,
Edith, born about 1878 and Harry, born 1887