Hi Nigel,
Checking baptisms on PRs for Besselsleigh for Williams children it says mother Emy
of St Helens Abingdon. I checked Abingdon St Helens PRs and found this marriage.
13 Dec 1784 William Bint to Amy Buckingham.
What do you think? i can see if baptisms for these are on there if you want.
I did check both Besselsleigh and Cumnor for a marriage for William but found nothing.
Both the above villages are very close to Abingdon.
Sue