1. The male head of a family, typically the father or oldest male member who holds authority and responsibility over the household
The family patriarch made all the important decisions for the household.
O patriarca familiar tomava todas as decisões importantes para a casa.
2. A man who is the founder or senior male member of a family line or dynasty
The patriarch of the family business built the company from the ground up.
O patriarca da empresa familiar construiu a companhia do zero.