Clarks in Gratiot,Michigan

I am looking for the parents of James Clark born about 1805 in New York. And I am looking for the parents of his wife Mary born abt 1809 New York. I have them in 1850 Constantia,Oswego,New York with 8children;(1)Oneday(m)1833,(2)Wallace(m)1831,(3)Gardner(m)1836,(4)Alexander(m)1838,(5)Malinda(f)1839,(6)Ashley(m)1840,(7)Earl(m)1847,(8)Jared(m)1849.-----------I have them in 1860 Constantia,Oswego,New York with 4 children;(1)Gardner age 24,(2)Ashley age 14,(3)Earl age 12,(4)Andrew age 4.-----They moved to Gratiot Co., Michigan after 1866 and before 1870. I have them in 1870 Alma,Gratiot,Michigan with 2 children;(1)Earl age 22,(2)Frank A.age 14.------Then I have them in 1880 Arcadia, Gratiot,Michigan living with one son and 6 Grandchildren--James Clark age 74 NY/wife Mary Clark age 70 NY/son Gardner Clark age 46 NY/DIL Mary Clark age 33 NY/grson George Clark age 14 NY/grson Ashley Clark age 13 IN/grdau Mary E. Clark age 11 MI/grdau Edith E. Clark age 9 MI/grson Adelbert F. Clark age 4 MI/grdau Florence age 7months MI.so my clark line ends with my mother's mother Adora Isobell Clark the only child of Orville Clark and Isobell Ide, Orville's father was George Clark whom I mentioned before. Can some one please help me find James and Mary's Parents.