I have an index for Northamptonshire I can only see a few, and sorry none from Peterborough as they take that to be Cambridgeshire.
So I'd just add keep an eye on Cambridgeshire as well as it's boarder moves in that area.
I'm sure your aware Peterborough is now in Cambridgshire :-)
Anyway here are the possibles from Northamptonshire hope they are of some use.
John & Dinah Blakesley labourer 1813 26-Dec Blakesley C of E
George & Anne Kings Sutton yeoman 1818 12-Oct Kings Sutton C of E b.Mar 20
Richard & Mary [blank] [blank] 1816 [blank] Adstone C of E born 2nd Jun
John Terry & Ann Chacombe weaver 1826 29-Oct Chacombe C of E
Joseph & Hannah Chacombe stocking maker 1836 20-Apr Chacombe C of E
All the best