Alexander Tessier, Peterborough, Ontario

New information regarding my search for information on the parents of Alexander Tessier:He moved to Saginaw, Mi. in 1882.He was born approximately 1850's and married Stephanie (Fanny) Corbeil approximately 1875 in Peterborough, Ontario.They had 9 children that we know of;Alexander Jr. b.1877 who married Edna Garret; Mathilda (Tillie) b. 1883 m. James McKinney; George, b. 1885 m. Blanche Thompson. Only one who kept the Tessier name; Melvina (Minnie) b. 1886 m. Harry Dundas; Charles b. 1887 m. Elizabeth Pringle; William b. 1889 m. Dora ?; Helena (Nellie) b. 1890 m. Mr. Wade and then Mr. Harper; David (my grandfather) b. 1892 m. Edna Frances Devers; John b. 1900.They all changed their name to Casey except George who kept the Tessier name.I have more information on all of their children except John.Some of the above children settled in the Detroit area and some remained in Saginaw, which was where I was born.Any information, please?