The oldest known ancestor of this family is Thomas Jefferson Pierce.  He was born in Kentucky in 1828 and later moved to Missouri.

Another family added to group A with their oldest known ancestor William Pierce b ca. 1705, probably in Virginia. They are descendants of his grandson, James Ephraim Pierce.

This Peercy family from Kentucky has John Pearcy, b. 1736 in Devon, England as their oldest known ancestor.