Plenty more here to untangle.
Looking at the Thomas/Eliz/Charles/William family, I see that Thomas was a smith too. They lived in Bristol street (which doesn't help). But I can't see anything to suggest that Betsey's mother was Elizabeth, or that Charles (if miswritten as Thomas) had married an Elizabeth before 1841. I'll have a look later to see if the family is identifiable in other censuses.
Looking at the Charles Glover that went to the USA, I see that no parents were named when he died (the column for this info is blank). There was a Charles Glover or Nichols bapt in Coleshill, in 1804, the son of Anne Nichols. I wonder if this could be Charles.