Looking at the
will of the John Cater, who died 1772, he doesn't look to be the John you're looking for.
Do you have any reference for the death of your John Cater in 1778?
I assume it was his daughter, Sophia, who married Robert Sherbourne in 1796 and died in 1812. In a death notice for her, she was named as a co-heiresses of her father. Do you have the will of her father?
London Courier and Evening Gazette
02 Dec 1812
page 4
Died
- On Saturday, the 21st November,
- at Ravenhead, in Lancashire,
- Sophia,
- wife of Robert Sherbourne, Esq.,
- and one of the co-heiresses of the late John Cater, Esq.,
- of Kempston Bury, in Bedfordshire