document — Palmieri, On Christian Marriage
From the General Synod in the Province of the Franks, At Which Boniface, Legate of the Apostolic See, Was Present, Which Perhaps Is the Same as the Synod of Leptines (cf. Hefele, Work Cited, at A.D. 745), Said to Have Been Held about A.D. 745
¶1323.
Chapter XIX. Agnates are those who descend through the male sex; cognates those who descend through the female. And therefore paternal uncles and the sons of paternal uncles are both agnates and cognates. But maternal uncles and the sons of maternal uncles are cognates, not agnates.