Decendants Of Hugh Kelsey Of Chester Co. SC (1776)

I am looking for information About the ancestors and decendants of Hugh Kelsey born 1754. He migratrd to SC with his father and two brothers from Ireland. One of the brothers died abord ship on the way over. The other was killed during the revalutiomary war I think at Cow Pens in North Carolina. Hugh served in the Revolution in at least three terms. The last of which hee served as a holsterer under a Capt Mills. Hugh married capt Mill's sister. They had one son Thomas.