The book I have, now out of print, I believe, is: "The Chronicle of a Southern Family, by William Hobart Sebastian, copyright 1972, Lib. of Congress No. 76-176319. The book says, "It is certain that Bejamin Sebastian settled and stayed in Wilkes Co, on the waters of Mulberry Creek, along with the Heralds, Browns, Carters, Alexanders, Barkers, Abshers, Blackburns, Calls, Turners, Stampers and other pioneer families.
"In 1819 Benjamin Sebastian left all his estate both personal and real to his son William Sebastian. He names no other children.
"We know Benjamin was the father of the following, he perhaps had others also. Alise born ca 1795, (this could have been a sister sic), William born ca. 1771, Elijah born ca 1772, John born ca 1784, Hezekiah born ca 1786, Mary born ca 1790.
"All of Bejamin's sons except William had left the Wilkes County area by 1810 according to the census for that year. We also know from the records that an orphan boy, age 16 years old named George Alexander was bound to Benjamin Sebastian, November 1800. There is some evidence that Benjamin Sebastian's wife was an Alexander.
"George Alexander alias Sebastian went west to Missouri with Elijah Sebastian where his descendents live to this day.
"Elijah Sebastian appears to have been the next oldest of Benjamin. (sic)
"In 1801 he married Phoe Brown of Wilkes Co., NC, a daughter of Walter Brown. According to Wilkes Co. records Martin Chandler, an orphan boy, age two was bound to Elijah Sebastian in August of 1801. In the year 1807 Elijah Sebastian sole all his property in Wilkes Co, NC and apparently at that time headed west."
Apparently Elijah served in the War of 1812 for his widow Sarah filed for Bounty Land May 7, 1855. She stated that she married Elihan Sebastin in St. Genevieve Co., Mo and that he name before the marriage was Sarah Dennis and that her husband died in St. Francois Co., MO 10 Oct 1853.Elijah's will named the following heirs: Martin Sebastian, a child, heirs of Rachel Bloom, Jane Johnson, Catherine McMurty, E.C. Sebastian, E.B. Sebastian, Phebe A. Dennis, Daniel Sebastian, Benjamin Sebastian. His son William was named administrator.
Unfortunately, the sources are not listed for most of the information in the book. If you have other questions, I'll see what I can find.