St. Dionysius of Alexandria was once the bishop of Alexandria. He had a vision which moved him to convert to Christianity. He then entered a catechetical school and later on became the master of the school.
St. Dionysius was already a bishop during the persecution of Christians from years 250-251. He had to flee to the Libyan Desert. During 257-260, he was exiled due to the Valerian persecution.
He was the Patriarch of Alexandria from December 248 until he passed away on March 264. He was also the 14th Pope.
