Adaldag, archbishop of Bremen

Adaldag was the seventh archbishop of Hamburg-Bremen, from 937 until his death.

The Prince-Archbishopric of Bremen was an ecclesiastical principality (787–1566/1648) of the Holy Roman Empire and the Catholic Church that after its definitive secularization in 1648 became the hereditary Duchy of Bremen. The prince-archbishopric, which was under the secular rule of the archbishop, consisted of about a third of the diocesan territory. The city of Bremen was de facto and de jure not part of the prince-archbishopric. Most of the prince-archbishopric lay rather in the area to the north of the city of Bremen, between the Weser and Elbe rivers. Even more confusingly, parts of the prince-archbishopric belonged in religious respect to the neighbouring Diocese of Verden, making up 10% of its diocesan territory.

April 28 is the 118th day of the year in the Gregorian calendar; 247 days remain until the end of the year.