Complex sentence: On "Sanford & Son", he appeared in the role of Grady Wilson, a cousin of Fred's, a part he played for just one episode; another role which involved a character named Grady Wilson would later go to actor Whitman Mayo.
Split into simpler sentences: On "Sanford & Son", he appeared in the role of Grady Wilson, a cousin of Fred's, apart he played for just one episode. Another role which involved a character named Grady Wilson would later go to actor Whitman Mayo.