I can't help with this specifically but I did have two families with the parents called John and Ann, baptising children in the same village at the same time. The only way of sorting them out was to use other sources like wills and manorial records to work out who was who!
By the way, there's a Phelp in my extended family, Cheshire, occasionally spelt Philp, or transcribed as Phillip or other spellings, which makes it difficult to search for!