Lul was an 8th-century Benedictine monk and preeminent church leader who served as the first permanent archbishop of Mainz. Born in the Kingdom of Wessex around 710, he later moved to Germany to assist Saint Boniface in missionary efforts. He eventually succeeded Boniface, expanding the influence of the Mainz bishopric and establishing the Hersfeld Abbey. His leadership helped solidify the Carolingian church reforms and the Christianization of the German regions of Hesse and Thuringia through his close cooperation with Frankish rulers.