Moses White of Davidson's Creek, NC - Mary McConnell

Please share with me any documentation you have on Mary McConnell. I am descended from Moses White Jr and Mary McConnell through daughter Elizabeth White Paden. I am trying to prove a DAR line. I have a Rowan County deed that has Moses White in the chain of title to John McCulloch. How do you know that John was Mary's father? What information do you have on the marriage in Lancaster PA?
Thanks.