Patruus
Defined in 2 dictionaries — Ballentine's (1916), Black's (1910)
Ballentine's Law Dictionary
James A. Ballentine · 1916
A paternal uncle.
Black's Law Dictionary
Henry Campbell Black, M.A. · 1910
Lat An uncle by the father's side; a father's brother.
— Patruus magnus. A grandfather's brother; granduncle.
— Patruus major. A great-grandfather's brother.
— Patruus maximus. A great-grandfather's father's brother.