Can anyone find a comic scan for me

It concerns batmans ancestry on his mother's side, i remeber there being a comic that focused on his parent's youth and his mother initially seemed to be merely a party girl from a rich background until the story progressed and we saw she had a fairly strong faith. Her maiden name was given as Kane (a nod to Batman's creator Bob Kane) and she was established as the descendant of Irish Catholics who had become wealthy.

But I can't find the scan for this , I know they mentioned his father's side of the family numerous times , but what about Martha kane ?

Does this also prove he has a Catholic background?

I dunno about the scan, but what I heard from adherents website years ago, Batman is supposed to be a lapsed Christian (Can't remember if its Catholicism or Protestantism)