Lookup Request - GOWERS - Slapton

[lynda123]

This is my first message, so please be gentle with me!
Is anyone able to look at parish records for Slapton in Bucks for me? I have found Thomas Gower b.1758 in Slapton and he married Sarah Pantlin 11.11.1782. Thomas' parents were Thomas Gower and Mercy Smith. I have found a record of Thomas and Mercy's marriage on 15.10.1753 at St Leonards Buckingham
but I cannot find their birth records. I do have one possibility for Thomas which is an IGI record 26.11.1727 in Aston Abbots.
Also, I have a record for William Gower b. 6.10.1811 in Slapton. His  birth record shows parents are Thomas and Sarah but I need to know Sarah's surname so I can establish whose son he is (I have two Thomas and Sarahs in my tree and he could belong to either!)
Any clues would be gratefully received. Many thanks.    Lynda