Marriage date of 10 Oct 1842 from family group sheet by Lois Hupfen. She had no county given. The IGI gives a date of 8 Oct 1842, marriage of Eliza Jane McCormick and David J. Cassity in Bath Co, KY, batch A458967.

1850 census of Bath Co., Ky, page 57, lists as family #56:
David Cassity, 32, farmer; Elizabeth J., 25; Amanda J., 6; George W., 4; Samuel N., 2; Emily, 1; Mary A., 3/12. Elizabeth born in Montgomery Co., Ky, all others born Bath Co., Ky.

1860 census of Bath Co., Ky, Owingsville P.O., enumerated 12 June, lists on p. 36 as family #261:
D. J. Cassity, 43, carpenter; Elizabeth, 38; Amanda, 17; George, 14; Samuel N., 13; Emily, 11; James, 9; Lindorfe (m), 7; Elizabeth, 7; Jacob, 5; Alexander, 3; Martha, 6/12. All born in Ky.

1870 census of Putnam Co., Indiana, Monroe township, Bainbridge P.O., enumerated 30 June, lists on pp. 33-34 as family #263:
Casity, David J., 52, farm labor; Elizabeth, 48; Emily, 21; James, 18; Elizabeth, 16; Jacob, 14; Alexander, 12; Martha, 10; Rachel, 7; David E., 1. All born in Kentucky.

1880 census of Jasper Co., Missouri, Sheridan township, enumerated 28 June, lists on p. 16 as family #138/143:
Cassity, David J., 63, farmer; Elizabeth J., 51, wife; Lindolf G., 27, son; Jacob, 24, son; Alexander W., 22, son; Emma T., 29, dau; Ella, 11, dau.

(The daughter Ella age 11 in this census may be the same person as the son David E. age 1 in the 1870 census.)

1900 census of Lawrence Co., Missouri lists David J. Cassity, age 82, b. Dec 1817, father, widowed, with his son Martha, see her notes for details.