agnatus (ag-nay-t<<schwa>>s), n.[Latin] Roman law. A person related through the male line.
“[Agnati were] all individuals subject for the time being to the same patria potestas, or who
would be so subject were the common ancestor alive. Brothers and sisters, with their uncles, aunts,
nephews, nieces, and other colla-terals (not having been received into another family), if related
through males, were agnates. The civil issue of the state was the Agnatic Family. Cognates were
all persons who could trace their blood to a single ancestor or an-cestress, and agnates were those
cognates who traced their connection exclusively through males.” John Bouvier, Bouvier’s Law
Dictionary (8th ed. 1914). [Blacks Law 8th]