Yes, Mr B:

Self Portrait has

I'm old Tom Moore from the bummer's shore in that good old golden days
They call me a bummer and a ginsot too, but what cares I for praise?
I wander around from town to town just like a roving sign
And all the people say: There goes Tom Moore, in the days of '49
In the days of old, in the days of gold
How oft'times I repine for the days of old
When we dug up the gold, in the days of '49

But I guess that's yet another sort of bummer. As in someone who bums around i.e. a hobo???