Will of Thomas Swearingen, Will Book No. I, pp 414-415 (as transcribed by members of Shenandoah Valley Chapter DAR, Martinsburg, WV, 1957-1960:
15th Day of October, 1780; Legatees: Son Thomas; son Van; son Andrew; Dau. Drusilla; Dau, Lydia; Bro. Bonini; Son Thomas and brother in law William Morgan
Testament in the presence of John Hearn, William M. Clinkerbeard (His Mark) Esther Clinkerbeard (Her mark) John Taylor
Will presented 21st Feb. 1786; 16th Sept. 1788 Account returned. (complete in file along with accounts and final vouchers, etc.)
http://freepages.genealogy.rootsweb.ancestry.com/~chafinmarsh/michener/descmorgan.pdf