David,
Well I mayhave just come out trumps there...
MAYBE!!!
On the FFHS's FHO site, there's a reference in the Somerset and Sorset Strays for a John Bailey from Frome, Somerset:
Name JOHN BAILEY from FROME, SOM - Date 05/05/1756 to SUNDON, BDF, - Event Marriage Details MAR.ANN BOWLESLIC Reference SUNDON PRS.
As there's no Sundon, and if you say it out loud, it sounds like Sutton, maybe this is actually Sutton?
Clearly it's not my John, but maybe his father? I know it's reaching a little, but it would explain why they just appear?
Karen