Starting a new one...
Edwin B. Tilton was in TAMING THE WEST with Francis Ford
Francis Ford was in THE TOUGHEST MAN IN ARIZONA with Sheb Wooley
Sheb Wooley was in HOOSIERS with Barbara
Next: Nancy Chase
I'll avoid using Tully Marshall again.
Bernice Radom was in PENROD with Claire McDowell
Claire McDowell was in ARE THESE OUR PARENTS? with Ian Wolfe
Ian Wolfe was in THX 1138 with Robert Duvall
Robert Duvall was in THE NATURAL & FALLING DOWN with Barbara
Next: Snitz Edwards (probably easy but I couldn't resist that name)
Sam Tomaino