Sheldon Leonard is a famous TV Producer.
As it turns out, the names for two main characters Sheldon and Leonard was inspired by a real person. They were actually named after the late producer-director Sheldon Leonard Bershad, who was behind some of the most successful TV series in the 60s, including The Dick Van Dyke Show and The Andy Griffith Show. He passed in 1997 at the age of 89.