Family & Companions
Prolific, distinguished character player from the stage who began his film career in 1914. A matinee idol in the 1920s, Blackmer portrayed Teddy Roosevelt more than a dozen times on film and stage and later specialized in unctuous heavies; he is probably best known as the suave devil-worshipper Roman Castevet in "Rosemary's Baby" (1968).
Cast (Feature Film)
First film as actor in "The Perils of Pauline"
Stage acting debut
First stage production as star, "39 East"
Starred opposite Shirley Booth in Broadway production of "Come Back, Little Sheba"
Played Roman Castavet in "Rosemary's Baby"