He’s a dead ringer for John Farrow, Mia’s father. But you can’t tell that to dumb freepers. As if all children look like their biologic fathers! Barbara Sinatra completely limited Frank’s life - old friends were alienated. My friend, Sidney Zion, could not get near him in the last few years of his life. Sad, really.
And he looks abolutely nothing at all like Frank S.! And the whole Frank thing was NEVER mentioned, not even once, until Satchel/Ronan was an adult.