Randolph S. Bancroft married Nancy Manwaring, daughter of Adam & Susan Manwaring, on 11 May 1854 in Lapeer Co., Michigan. Randolph's brother, John O. Bancoft, married Huldah Richmond, daughter of Edward Richmond (one of my distant Richmond cousins). Randolph and his father, Daniel Bancroft, were listed here in a Frost family book. Randolph & Nancy (Manwaring) Bancroft's home in Romeo, Macomb Co., Michigan, is now an historical site (Bancroft-Stranahan Museum).
The Manwaring family was featured on another blog entry here.