Zinnemann, Fred (High Noon, From Here to Eternity, etc.)
For the next one, how about two or more names that are associated with each other, like:
Abbott and Costello
Bassie and Adriaan (the Dutchmen know what I'm talking about), they are two famous Dutch TV-stars, one is a clown, the other one an acrobate. They're also brothers.
Darby and Joan
(Thanks, drom!)
Edgar Bergen and Charlie McCarthy (Is that too many names?)
.)