Seeking descendants of Joseph Jackson who md. Clarissa Jane Colf and settled in Locke Twp by 1845. Joseph b. 1818 in NY; and Clarissa b. 1823 in Monroe Co, NY. They married in 1844 in Shiawassee Co, Mich. Their children w/birthdates in Locke Twp. were: Euncie (1845) Franklin C. (1848) Ellen Isadora (1853 Emma I. (1858) Ida (1863) Mary (1862)