Brother of 1960 Immortal Thomas, "Will" was born April 12, 1885 on a farm near Hudson, Michigan. He went to Detroit as a young man to work for the Detroit Times. Later he worked for the turf journals Western Horseman, The Horseman And Fair World and Horse Review. Gahagan moved to Goshen, New York in 1927 to become registrar of the reorganized Trotting Register. He was editor of Hoof Beats, the USTA's monthly magazine, member of The Hambletonian Society, the Grand Circuit and the Trotting Horse Club of America. Will Gahagan died in Goshen in 1946.
Published in the Harness Racing Museum's 1994 book, The Immortals