Pope Achillas of Alexandria, the 18th Patriarch of Alexandria, was born in the year three hundred in the vibrant city of Alexandria, Egypt. His remarkable knowledge and deep piety earned him the respect of his contemporaries, leading to his ordination as a priest by Pope Theonas. Following the departure of Pierius, Achillas was appointed as the head of the esteemed Catechetical School of Alexandria, where he made significant contributions to Greek philosophy and theological science.
In December of three hundred twelve, Achillas was enthroned as patriarch, a position he assumed after the martyrdom of his predecessor, Pope Peter, during the tumultuous Diocletianic Persecution. His tenure, however, was marked by controversy when he acquiesced to the requests of Arius, a figure previously condemned by Peter, allowing him to reclaim his former role as priest and preacher.
Sadly, Achillas's reign was short-lived, as he passed away just six months later on the nineteenth of Paoni in three hundred thirteen. His death opened the door for Arius to seek the position of Bishop of Alexandria, but the clergy and the faithful ultimately chose Alexander to succeed Achillas, ensuring a continuation of leadership in the church.