Hi,
Thank you Sillgen and ChrisWest for all the helpful comments.
Sillgen, I was going to ask at the local LDS family history centre. The nearest one to me is just outside Nottingham but they are closed until the beginning of September. It can be very frustrating if you order the "wrong" film so I was just trying to make sure where I should be looking. Elizabeth Hayton married Edward Fisher 11 August 1798 at the parish church in Kendal. They lived in Kendal and produced seven children, Thomas, Jonathan, Dorothy, Robert, Edward, Barbary and Elizabeth. All of those names appear in the two previous generations of the Fisher family so there isn't really a clue in the names. The 1771 baptism I found was a child of Miles and Elizabeth Hayton so if this was my Elizabeth/Betty then she didn't use her father's name for one of her children, nor do any of her grandchildren so far as I know have the name Miles.
ChrisWest, my booklet is "Cumbrian Ancestors" published in 1988 and very useful it has been over the years. I was guessing when I said that the baptisms might be in Kendal parish registers. This happens at Ulverston, Lancashire too where there were several small chapels of ease most of which later became parish churches in their own right. It can make finding the register you need a bit of a puzzle.
Thank you once again,
Janeada
P.S. One of my Fisher Family married a William Sill at Kendal (1866) I think he was born at Blackburn c1847. Is he anything to do with your tree Sillgen?