I have got no further with this, other than I really don't think the servant Bennett is the right Eliza to be the mother of John Bennett.
It's a puzzle, as the first we see of "Isaac Taper" is on John's marriage certificate, not his birth certificate, so I don't know where he got the name. It's probably spelt wrongly, and there are other Tapers or Tappers around at that time.
Family tradition (his daughter, my great-grandmother, told my own mother) is that John was later in life a Methodist Lay preacher. I have looked in the Primitive Methodist records and can find nothing about him, but the non-conformist tradition would be some kind of obscure link to William Isaac Tapper.
