Leonard Keen and Sarah Davis lived in Fairhaven, Massachusetts, in the mid-19th century, and later moved to Acushnet, where they lived during the Civil War. They had at least nine children: James F., Susan E., William Augustus (1839-1878), Sarah Augusta, Lydia Ann (1843-1862), Leonard, Jr., Amelia F., Charles F., and Mary E. William Augustus Keen moved to San Francisco, California, in the spring of 1862, and remained there for several years, though he later returned to Massachusetts. Sarah Augusta Keen worked as a schoolteacher in Lakeville, Massachusetts, throughout the Civil War, and married Albert F. White in 1865.
From the guide to the Keen family letters, 1859-1867, 1862-1867, (William L. Clements Library, University of Michigan)