Frank R. Thompson's Parents???

I am trying to help my husband research his family tree, but we have hit a dead end. I am trying to find the information on Frank R. Thompson's parents. Here is all the information I have.

Frank R. Thompson
Born: October 30, 1927 in Cincinnati, Ohio
Died: March 30, 1985 in Cincinnati, Ohio
Married to: Evelyn Stephenson
Children: Edward Lee Thompson (This is my husband's father)
Frank Ray Thompson

Father: Claude(???) Thompson
Mother: Unknown

If anyone has any information on the parents I would love to hear from you.