Following his casting in the original Broadway cast of "A Chorus Line," he changed his name to Clive Wilson and worked professionally as an artist. His work was displayed in galleries on both the East and West coasts.
Clerk was possibly best known as a professional decorator/interior designer, which is how he met actor/writer Tom Tryon, decorating Tryon's Central Park West apartment, which was later featured in "Architectural Digest" magazine.
He was involved in the '70s with actor-turned-writer Tom Tryon and he co-lived at Tryon's house in West Hollywood.