Sounds like we come from the same lineage. I've been in contact with Leonard Sluman (whose grandmother was a Snoddy) in Larne, Ireland. I've provided him with all my information and he is trying to link us with his research.
I have "published" a book on the Family Tree Maker web site: http://www.familytreemaker.com/users/b/y/l/Carol-S-Byler-AL/...
1 Unknown Snoddy b: Abt. 1700 in Ireland?
......2 John Snoddy b: Abt. 1719 in Ireland d: 1758 in Anson Co, NC
..........+Agness/Ann ?Falls m: Abt. 1754 in ?Ireland d: 1793 in Iredell Co, NC
......2 Samuel Snoddy, Sr. b: April 23, 1727 in Larne, Co Antrim, Ireland d: August 1806 in Iredell Co, NC
..........+Elizabeth Sloan b: September 1725 in Ireland m: Abt. 1748 in Co Antrim, Ireland d: 1815 in Iredell Co, NC