A graduate of Maryland Agriculture College and a popular stage actor, tall, handsome Mahlon Hamilton entered films with Metro in 1915 and quickly established himself as a fine leading man opposite such powerful female stars as Olga Petrova, Louise Glaum, and Marion Davies. He reached something of a pinnacle as the wealthy guardian whom Mary Pickford grows up to marry in the extremely popular Daddy Long Legs (1919) but it was all downhill from there for the actor, who mostly starred in programmers in the 1920s. Surviving the transition to sound, Hamilton continued playing supporting roles and bit parts onscreen until at least 1949. In his final years, he resided at the Motion Picture Country House and Hospital in Woodland Hills, CA.