May 7, 1274: The Second Council of Lyons convenes with the goal of reunifying the Roman and Greek churches. Orthodox delegates agreed to recognize the papal claims and recite the Creed with the filioque clause, but the union was fiercely rejected by the majority of Orthodox clergy and laity fiercely rejected the union (see issue 54: Eastern Orthodoxy)
May 7, 1605: Russian prelate Nikon, patriarch of Moscow and the head of the Russian church, is born in Valdemanovo. When he tried to reform the church in 1642, a schism erupted, and the church deposed and banished him (see issue 18: Christianity in Russia).
May 7, 1833: German pianist and composer Johannes Brahms is born in Hamburg. Intensely religious, he wrote many works for the church though one never officially employed him. He even compiled the biblical texts for his "German Requiem" himself.
May 7, 1839: Hymnwriter and pastor Elisha A. Hoffman is born in Pennsylvania. His songs include "I Must Tell Jesus," "Down at the Cross," "Are You Washed in the Blood?" and "Leaning on the Everlasting Arms.
February 24, 1208: Francis of Assisi experiences a vision in the church of Portunicula, Italy. Though not his first vision, it convinced him to begin a mission of preaching repentance, singing, caring for lepers, and aiding the peasants. Most notably, he and his followers renounced wealth and followed absolute poverty (see issue 42: Francis of Assisi).
February 24, 1582: Gregory XIII issues a bull requiring all Catholic countries to follow October 4 with October 15 and replace the Julian calendar ...