Alsey Earp's father was John Earp. He first married Thennie Eastman and had 8 children.
They were Ned (Ted)(Edward), Celia, Sally(Sarah), Alsey, John (Jack), Zachariah Taylor, Lonnie, Fannie, Lissie. He then married Medlin. Had two children by her. William H. and Clemens. Let me know which one was your ancestor. I believe John's father was William Earp but trying to document now. Hope this helps.