"Ol' Man River was written in 1925 for the musical, "Showboat".No, I've never lived in Idaho. (Though my brother used to.) "Weiserguy" is a riff on my last name.
My "Old Man Rivers" comment was riffing on both a fellow participant (whose screen name is Michael Rivers Kramer) as well as the comment in #53 from @radiofan2023:
So both came together in that reference. But I also know the song Old Man River from Paul Robeson's marvelous recording of it I've had since college. (The album it's on is probably older than me.)
Walter Brennan was Grand Marshall for Portland's Grand Floral Parade in(I believe)1971. He always played an old man in his movies, even when he was young!