Constance's father, David H. Willard (1852-1916) was originally from Wisconsin but when he married to Miss Cora Day (1856-1916), he moved to Minnesota and was employed by his father-in-law at Minneapolis in the lumber business.
David Willard and his wife Cora had five children: Irma (1881-1974), Paul Day (b. 1882), Constance (1890-1964), Eugenia(1892-1893) and Louis Gray (1894-1896). Two of whom died in infancy.
Constance never married. She died in Compton, California.