attempt to ID uncredited actor

This line sets it up:"Dallas (Claire Trevor) is implied to be a prostitute, and so is ostracized from (the town of) Tonto (which means "stupid", "foolish" or "daft" in Spanish) by a self-stylized matronly moral majority." I am attempting to ID the actor who wears a badge in the early scene when Dallas and the doctor are being run out of town and onto the stage coach. He may be "Deputy Frank", listed as Franklyn Farnum, but having found pictures of Farnum, that doesn't look like who I mean, so my character ID may be wrong. I don't mean the Marshal who goes on the stage (that's George Bancroft), but the thin man with high-pitched voice who marches behind Dallas and the doctor in front of the moral majority ladies. I have seen him in The Grapes of Wrath, he is in the early scene where he tells the Joads about having seen California, and he's coming back home to starve. Papa Joad asks him if he's one of them Reds, and he swears he's not. He says he's just trying to tell them what it took his wife dead to learn, took his children dead as well, and the Doc said they died from heart failure, but their little bellies were swollen from hunger. I know this is the same actor as the man in Stage Coach, but I don't think it is Franklyn Farnum. Actors like this had long careers in film, sometimes made entirely of uncredited roles.