Saint Apollinaris Claudius, Bishop of Hierapolis in Phrygia, was one of the most illustrious prelates of the second age of the Church, which began with the edict of Constantine in 313, making Christianity the religion of the Roman Empire. Little is known of his acts, and his writings, which then were held in great esteem, are apparently all lost.
He was called “the Apologist” due to his “apologia” to Marcus Aurelius. He told of a miracle attributed to the 12th Legion, which was mainly Christian, wherein they defeated the enemy when they were completely surrounded in Moravia. They fell on their knees and begged God for water and suddenly rain fell and revived the soldiers. This enabled them to conquer the Germans. The “apologia” resulted in an imperial edict forbidding the denunciation of Christians for their religion.
The exact date of his death is not known, but it was probably while Marcus Aurelius was still Emperor. More on Apollinaris Claudius