Santo Stefano degli Abissini (also known as Santo Stefano dei Mori) is an Ethiopian Catholic church behind St. Peter's Basilica, one of the only structures in the Vatican to survive the 16th-century demolition of Old St. Peter's, making it architecturally the oldest surviving church in Vatican City. In 1479, Pope Sixtus IV granted the church to Ethiopian monks, and it became the center of a small Ethiopian diaspora community and monastery documented from 1497 onward. The community produced the Psalterium Aethiopicum (Rome, 1513), the first printed book in Ge'ez, and its most prominent member, the 16th-century scholar Täsfa Ṣeyon, became a librarian, translator, and advisor to European humanist scholars on Ethiopian Orthodox Christianity -- one of the most sustained points of direct intellectual exchange between a sub-Saharan African Christian tradition and Renaissance Europe.