Looking for a movie where a banker is robbed by a bum of his identity while drunk. Then the bum is killed by a train and the banker can't get his identity back and becomes homeless. I'm told its Orsen Wells but I'm not sure. I believe the ending scene has the homeless banker meeting his son (who doesn't recognize him) and takes him home makes him a sandwich and then the former banker walks off eating the sandwich.

Sounds like The Way of All Flesh (http://www.imdb.com/title/tt0033244/)