The title "patriarch" means the head or the leader of a tribe or a community. Ecclesiastically it means the head of the fathers (bishops) and their congregation of faithful. This title is historically known as “Patriarch of Alexandria and all Africa on the Holy Apostolic Throne of Saint Mark the Evangelist,” that is “of Alexandria and of all Africa.” The title of “patriarch” was first used around the time of the Third Ecumenical Council of Ephesus, convened in 431 AD, and ratified at Chalcedon in 451 AD.