What does ATAVUS mean?

ATAVUS meaning in Law Dictionary

The great-grandfather's or great-grandmother's grandfather; a fourth grandfather. The ascending line of lineal ancestry runs hence: Pater, Avus, Proarus, Ahavus, Atavus, Tritavus. The 7th gen eration into the ascending scale is going to be Tritavi- pater, in addition to after that above It Proaviatavus.