The 10th of March 1675 was the first treaty made by those in South Carolina. The Kiawan tribe made "land cession" of course. However, it was not until those Welsh Baptist arrived from Delaware that the first with the JONES surname appears.
According to David Benedict the church was first called Pedee after the great Pedee River, 60 miles north of Georgetown. When other arrived, its name was changed to "Welsh-Neck" which described from were most of the folks who founded the church originated. In 1737, 30 members of the Welsh-Tract Church which first had been in Pennsylvania, then in Delaware, arrived to establish the church in South Carolina.
David Jones, Griffith Jones, and John Jones moved this year  from "Welch Tract" in Delaware to "Pee Dee River" in South Carolina. They must have been related, but I do not have any given relationship. Pennsylvania, Delaware, to South Carolina...man those Baptist got around or were thrown out of most places.
The references for this are found in An Abridgement of The Baptist Denomination in America, and Other Parts of The World, by David Benedict, Lincoln & Edmands, 1820. [Have a copy in my hands!]
The Jones folks can be found in Jones Journeys, Vol. VII, p. 201, July 1979. Does anyone know the relationship among these folks? Please post.