Hi,
William Cornwell and Ann Arber married 3 Nov 1789 at Bottisham but don't appear to have had any children baptised there.
The only Philip I can find was baptised 28 Oct 1792 in Bottisham, son of Edward and Elizabeth (nee Hart).
The Cambridgeshire Family History Society are transcribing Lode parish registers but I don't know when they are available.
Have you come across a Prudence Ayres born about 1695, she was my 7x gt grandmother but her baptism has proved elusive!
Tempsford.