St. Marcarius of Jerusalem
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St. Marcarius, Bishop (Feast - March 10) St. Marcarius was bishop of Jerusalem from about 313 until his death about 334. He was a lifelong staunch opponent of Arianism and fought strenuously against this pernicious heresy. He was present at the Council of Nicaea in 325 and played a large roll in drafting the Creed. Soon after the Council, he miraculously discovered the true Cross in Jerusalem together with St. Helena, and he was commissioned by her son, Emperor Constantine, to build the Church of the Holy Sepulcher. Later, he and his fellow Bishops of Palestine received another letter from Constantine to construct at Mamre.
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