John M. Clark b. 1792, Newton PA, d. 1878, Kortright, NY; m. Anne Comyn Leal, b. 1795, d. 1881, East Meredith.Children:James Leal, Henry, Mary, Lydia (I have no notes for the other 8 children you mention).
James Leal Clark b. 7/9/1838, Kortright, d. 3/11/1932, Kortright; m. 9/9/1885 Elizabeth Adair b. 6/18/1854, Kortright, d. April 1923, Kortright.
There I lose all the children except Elizabeth Eleanor, b. 12/31/1895, m. John Marvin Bellis 12/24/1919.
From John Marvin, it goes to John Marvin Jr., then James, my husband.
I'd appreciate any other info or sources you could share.Thanks!