I still believe the scenario I listed before is correct.
Elizabeth Beckett bp.28/11/1810 Reymerston, dau. Wm and Phoebe (nee Good)
Louisa Beckett bp.7/2/1819 Reymerston, ditto
So these 2 definitely sisters.
Elizabeth Beckett married Charles Banyard 5/2/1833 Reymerston - their apparent only child, Charles b.16/5/1833, bp.2/5/1833 East Dereham.
By 1841 Elizabeth is living with James Newman and has taken his name. Her son Charles is with James Newman's parents. Her husband Charles, a Horse Keeper, is living alone in East Dereham.
In 1842 James Newman and said Elizabeth, still in Downham have a daughter Elizabeth who is registered and baptised as Newman. Legally, as her parents were not married, she should have been registered under her mothers given name, and legally this was Banyard.
If the vicar who married them asked some pertinent questions it might have emerged that her parents had never been married and thus, correctly, he listed her as Elizabeth Banyard - no wonder the poor woman was confused. Legally a Banyard but registered and baptised a Newman (name of her actual father).
Can't figure out what happened to Charles Banyard, senior. He was not the Charles Banyard died and buried 1845 - this was another one (shown as a Gent) who was married to a Sarah at East Dereham and listed as a widow in 1851.
Regardless of the shenanigans along the way, your Elizabeth was the daughter of James Newman and Elizabeth (nee Beckett) who was legally still a Banyard at the time of her birth.
Annette