 With his first wife Washburn was the father of son Ferris (1842-1860), who died at age 18 while a student at Dartmouth College, and daughter Emily May ("Emma"), who died at age 6 (1846-1853).With his second wife, Washburn was the father of four children, including Thacher (1859-1862), who died as an infant.Daughter Elizabeth (1852-1938), the wife of Thomas Wilson Dorr Worthen survived him, as did daughter Mary (1854-1941), the wife of George B. Parkinson, and son Charles (1856-1904).