Dennis, William Henry was born on February 21, 1856 in Philadelphia, Pennsylvania, United States. Son of Edward Griscom and Katharine (Matthews) Dennis.
Bachelor of Arts, Georgetown College, District of Columbia, 1874, Bachelor of Laws, 1876, A.M., 1882.
Deputy register of Wills, District of Columbia, 1876-1886. Associate in practice in Washington with Enoch Totten until his death, 1898, then in general practice. Trustee of estates. Director Carroll Institute, District of Columbia.
President Washington Council Catholic Benevolent Legion. Author: Probate Law of District of Columbia, 1880. Home: Washington, Distric.