I'm a direct descendant of Samuel Edward (1866-1943) and Eliza Wiltison.
Samuel's father was Samuel Hamilton Alexander Jr., b. 1936 in West Virginia, d.1881.Mother was Catherine McNeil Coyner, b. 1835 in Hardy, WV.
Up the father's line was Samuel Hamilton Alexander Sr., b. 1798, d. 1882 in WV.Married to Mary Lobb 1805-1888.
Next back was William Alexander, 1753-1813, married to Jane Sherrard 1774-1830.These were the Alexander emigrants.William was born in Belfast, Jane in Limavady, Ireland.I don't have an emigration date but it would have been most likely in the 1780's.