Biographical Sketch (1932):2371, p. 351-352. "Jeduthan D., b. at Pittsford, Vermont, or in Cayuga County, New York, 17 February 1805; m. (1) Letutia Morey, b. 1807, who d. at Rensselaer, Indiana, 16 October 1855; m. (2) 16 April 1856, Mrs. Mary Jane Clark, b. 10 January 1828, widow of Mervin Clark and daughter of Amariah and Elizabeth (hines) Tharp (Descts. of John Clark, of Farmington (1882), p. 59)."

1870 U.S. Census:2457 Mary J. enumerated in the household of her husband Jeduthan D. Hopkins in Rensselaer Township, Jasper County, Indiana as a white female, age 41, keeping house, born in Pennsylvania. A male, age 9, perhaps named Keenan (difficult to read) was also residing in the household.