I am the granddaughter of Alvah Epley (son of Albin Epley and Sarah Gilfillan).Albin's father was John Epley (b. about 1778) and his mother was Joan Francis (I've also seen her referred to as Joan France). It gets confusing after that.I believe that John Epley's (my greatgreatgrandfather) father was also named John.He was born 25 July 1765 in York County PA. His father's name was Matthias b. about 1742 also in York County. Then his father was yet another John Epley, born about 1720.
It's interesting that you mention another Sarah Gilfillan living next door to Albin -- that was probably his wife's mother, Sarah Gilfillan, nee Moats.I'm actually named for my great grandmother Sarah (Albin's wife).Family lore has it that she was gifted with "healing hands/touch."She could cure headaches, nosebleeds, etc.