a. rare. [f. ANCESTRY + -AL 1; cf. industry, industrial.] Of or pertaining to ancestry; = ANCESTRAL.
a. 1641. Bp. Mountagu, Acts & Mon., 488. Desert ancestriall, or derived titles from grandsires long agone.
1659. Howell, Lex. Tetragl., Naturall Children legitimated by prescription and long Tract of Ancestriall Time.
1806. W. Taylor, in Ann. Rev., IV. 261. If ancestrial persecutions were to be visited on posterity.