Date of Birth: Jul 13, 1895
Birthplace: Salisbury, North Carolina, U.S.
From Wikipedia, the free encyclopedia. Sidney Alderman Blackmer (13 July 1895 – 6 October 1973) was an American actor. Blackmer was born and raised in Salisbury, North Carolina. He started off in an insurance and financial business but gave up on it. While working as a builders laborer on a new building, he saw a Pearl White serial being filmed and immediately decided to go into acting.