Gerasimos Mikragiannanitis was an Athonite monk and the foremost Greek hymnographer of the twentieth century. Born in 1905 at Droviani in Northern Epirus, he came to Mount Athos as a young man and settled at the Skete of Little Saint Anne (Mikra Agia Anna), where he spent the remainder of his life. Over the course of his monastic career he composed an immense body of liturgical poetry, estimated at more than two thousand services and hymns, and he held the office of Great Hymnographer of the Great Church of Christ. He reposed on Mount Athos in 1991.
He arrived on Mount Athos in 1923 and entered the hermitage of Saint Anna at Little Saint Anne, where he was placed under the spiritual guidance of the hieromonk Meletios Ioannidis, a monk of Asia Minor origin. He received the monastic tonsure in 1924, taking the name Gerasimos. Largely self-taught in the art of hymnography, he devoted himself to composing liturgical texts that, by many accounts, were taken up almost immediately into the worship of the Church.
His compositions honored the Holy Trinity, Christ, the Mother of God, and a great number of saints, and his facility earned him the popular epithet of the 'nightingale of the Church.' He was recognized as a hymnographer of the Great Church of Christ in 1959, and in 1968 the Academy of Athens conferred upon him a silver medal in acknowledgment of his work. In 2023 the Holy and Sacred Synod of the Ecumenical Patriarchate registered him in the Diptychs of the Orthodox Church, and his commemoration is kept on December 7.