What is Ancestral?

Legal Definition
Relating to ancestors or to what has been done by them; as homage ancestrel. Derived from ancestors. Ancestral estates are such as are transmitted by descent, and not by purchase. 4 Kent, Comm. 404. Brown v. Whaley, 58 Ohio St 654, 49 N. B. 479, 65 Am. St. Rep. 793.
-- Black's Law Dictionary
Legal Definition
What relates to or has, been done by one's ancestors; as homage ancestral, and the like.
-- Bouviers Law Dictionary