Ceolfrid or Ceolfrith (c.640 to 717) was leader of the monastic community at Wearmouth and Jarrow after Benedict Biscop, and mentor to Bede. Ceolfrid, according to Bede, accompanied Benedict on at least one of his journeys to Rome and acquired his master's love of books and continued to develop the library at Wearmouth which amounted to 300 volumes making it the largest in Anglo-Saxon England. Ceolfrid took over the leadership of the community in 686. His greatest project was the compilation of three single volume editions of the bible of which the only surviving copy has been established as the Codex Amiatinus. Although very aged Ceolfrid undertook to carry one copy to the Pope in Rome personally. After a long sea voyage Ceolfrid landed in Germany but war detained him there in a monastry where he died.