Adalgar was a tenth-century archbishop who led the see of Bremen from 888 until his death in 909. Born around 900, he was the brother of the abbot of Corvey and originally served as a deacon alongside Rimbert. After being consecrated as a bishop to assist Rimbert, he eventually succeeded him as the third archbishop of the region. His leadership occurred during a period of significant political and ecclesiastical instability, which often limited his ability to carry out his missionary work.
Ecclesiastical life
During his tenure, Adalgar faced challenges from the archbishopric of Cologne, which sought to reassert jurisdiction over Bremen. This dispute required intervention from various popes and synods to determine the relationship between the sees. Due to his declining health in later years, he relied on a coadjutor named Hoger and several neighboring bishops to help manage his metropolitan responsibilities.
Veneration
He is recognized as a saint within both the Eastern Orthodox and Roman Catholic traditions. His feast day is observed annually on 29 April.