Background
Mattingly, Robert Edgar was born on September 14, 1868 in at Washington, District of Columbia. Son of George Eugene and Louisa Mitchell (Hedgeman) Mattingly.
Mattingly, Robert Edgar was born on September 14, 1868 in at Washington, District of Columbia. Son of George Eugene and Louisa Mitchell (Hedgeman) Mattingly.
Educated Jefferson (public) School, Washington. Bachelor of Laws, Georgetown University, District of Columbia, 1891, Master of Laws, 1892.
Clerk, stenographer and United States pension examiner, United States bureau of Pensions, 1886-1897. In law practice, Washington, since 1898. Delaware Democratic National Convention, Chicago, 1896, Kansas City, 1900, Denver, 1908, Baltimore, 1912, St. Louis, 1916, serving on Committee on Resolutions and Platform in each convention.
Chairman Democratic Central Committee, District of Columbia Appointed supervisor United States Census (14th), for District of Columbia, 1919.
Married Julia Marshall Cameron, of Petersburg, Virginia, June 5, 1901 (died, 1910).