Baldwin of Luxembourg was the archbishop and elector of Trier and archchancellor of Burgundy from 1307 to his death. From 1328 to 1336, he was the administrator of the archdiocese of Mainz and from 1331 to 1337 of the dioceses of Worms and Speyer. He was one of the most prominent German prelates and statesmen of his age, and the most effective ruler of Trier during the late Middle Ages.

The Diocese of Trier, in English historically also known as Treves from French Trèves, is a Latin Church ecclesiastical territory or diocese of the Catholic church in Germany. When it was the archbishopric and Electorate of Trier, it was one of the most important states of the Holy Roman Empire, both as an ecclesiastical principality and as a diocese of the church. Unlike the other Rhenish dioceses—including Mainz and Cologne–Trier was the former Roman provincial capital of Augusta Treverorum. Given its status, Trier has continuously been an episcopal see since Roman times and is one of the oldest dioceses in all of Germany. The diocese was elevated to an archdiocese in the time of Charlemagne and was the metropolitan for the dioceses of Metz, Toul, and Verdun. After the victory of Napoleon Bonaparte of France, the archdiocese was lowered to a diocese and is now a suffragan in the ecclesiastical province of the Archdiocese of Cologne. The diocesan cathedral is the Cathedral of Saint Peter. The Cathedral Chapter retains the right to elect the bishop, rather than selection by papal appointment.