I think Joe's maternal Grandfather's name was Joseph.
Yup!!! You got it, Pal, Joseph!
Which leads to the pseudo-astonishing non-trivial revelation that Joseph Leonard Bonamassa is actually named after his grandfathers!
Rock ON & Keep The Faith,
"Everybody wants ta get inta the act!"
“Now, this isn’t your ordinary party crowd, here. I mean, there are professionals in here.”