a. rare. [f. ANCESTRY + -AL 1; cf. industry, industrial.] Of or pertaining to ancestry; = ANCESTRAL.

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a. 1641.  Bp. Mountagu, Acts & Mon., 488. Desert … ancestriall, or derived titles from grandsires long agone.

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1659.  Howell, Lex. Tetragl., Naturall Children … legitimated by prescription and long Tract of Ancestriall Time.

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1806.  W. Taylor, in Ann. Rev., IV. 261. If ancestrial persecutions were to be visited on posterity.

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