Hi Rob, welcome to Mudcat, home of the Digital Tradition database. See that box in the upper right corner? If you put [My Old Man] in there, like that, in brackets, you'll pull up a list of the songs with that phrase in it.
I'm going to guess that the one you want is by Ewan MacColl and is here.
If that isn't it, use the brackets and search. There's a good chance it's here.
Blessings,
Barbara