Answer: Claude Stroud
Stroud, born on March 26th, 1907 in Kaufman, Texas was cast as Sid Arbuck. Sid was sitting in his car when we first saw him and he noticed Holly going to her apartment. He got out of his car and dashed towards her to speak with her. Sid mentioned how Holly seemed to have been gone for so long the night before and he really wanted to talk to her again. Holly forgot his name, which led to him reintroducing himself to her and then he asked her if she liked him. Holly stated she actually worshipped Sid but that she had to go to bed, which led to Sid being upset. Once she entered her apartment and closed the door, Sid knocked and mentioned to Holly all the times he was good to her but this upset the landlord. Sid then left the building so as to not disrupt the landlord and the other tenants anymore that evening. In the final scene of the movie, Paul threw a ring in frustration at Holly, which he had specially marked for her, but then they realized they loved each other so they kissed. Stroud guest starred on the TV series', "Alice", "Too Close for Comfort" and "Perry Mason".