Walker, Edwin was born on April 15, 1832 in Genesee Company, New York, United States. Son of Obediah and Phoebe (Cushman) Walker.
Admitted to bar, 1854. Practiced at Logansport, Indiana, 1854-1865, Chicago, since 1865. General solicitor Cincinnati, Richmond & Logansport Railroad Company, 1860-1865, and its successor, Chicago & Great Eastern Railway, 1870-1883.
Illinois counsel C.,M.&St.P. Railroad Company, 1870-1896. Special counsel for United States in Debs conspiracy strike, 1894. Solicitor general Chicago Exposition, 1893.