Early in his career Walter Long was married to Luray Huntley, an actress for D.W. Griffith's stock company. Huntley and Long performed together in several of Griffith's films including Traffic in Souls (1913), Let Katie Do It (1916), and Intolerance: Love's Struggle Throughout the Ages (1916). They remained married until her death in 1918 at age 28 due to the Spanish influenza epidemic.