Death record of Jane Davis Lowry names her parents Nathan Davis and Rebecca Grimm (Iowa, Deaths and Burials, 1850-1990, database, Ancestry.com).

From Findagrave.com: She married John W. Lowry about 1854. They had six children, including Alexander, Mary Ann, Martha, George W., all born in Illinois (see 1870 census of New Lenox, Will, Illinois).