Probate Lookups - Palmby

[4b2]

If anyone has access to an index of ecclesiastical probate for the area around Cambridge and Ely, I would be grateful for lookup for entries for the following surname, which has many variants:

Palmby
Pamby
Pambey
Parnby
Parneby
Pamley
Pamlea
Parleby
Parlby
Parleben
Parlebon
Parlebien
Barnby
Barneby

And others.

In particular I am looking for any possible probate of a Robert Palmby, of Bourn, who died in 1748, and was listed as a freeholder in a poll book for a year in the early 1700s.

Thank you in advance, for your time.