I've done some work in researching this line, especially have found a great deal about Sarah's brother Reuben Botkin/Bodkins. Posting a couple of related census records.

1860 Census, Cedar Twp, Lee County, Iowa page 333
712/657
Harvey Bankson, 26, Farmer, Ohio
Sarah, 23, OH (d/o Thomas Botkin and Eliza Wallace)
Eliza E., 4, Ohio
William L., 3, Iowa
Mary C., ?/12, Iowa.
(next door - Sarah's parents and siblings)
711/656
Thoms Botkin, 56, farmer, 300 Vir.
Eliza, 52, Vir
Harriett E., 15, OH
Susan M., 9, OH
Reuben M., 7, OH
Joseph Botkin, 36, farm laborer, Vir.
Mary, 36, Vir

1880 Census, Grant, Putnam, Missouri, page 481A
Harvy BANKSON Self M Male W 49 OH Farmer NY NY
Sarah M. BANKSON Wife M Female W 46 OH Keeping House VA VA
William BANKSON Son S Male W 22 IA Works At Sawmill OH OH
Charles BANKSON Son S Male W 16 IA Laborer OH OH
Cora B. BANKSON Dau S Female W 14 IA OH OH
Thomas H. BANKSON Son S Male W 12 MO Works On Farm OH OH
Theadore BANKSON Son S Male W 8 MO OH OH
Nettie F. BANKSON Dau S Female W 6 MO OH OH
J. Elmer BANKSON Son S Male W 4 MO OH OH