Theoderich von Wied (also called Dietrich of Wied or Theodoric II; c. 1170 – 28 March 1242) was Archbishop and Prince-elector of Trier from 1212 until his death.
Elected archbishop upon the death of his predecessor John I on 15 July 1212,[1] he soon entered into a fierce quarrel with the Rhenish count Henry II of Nassau over the erection of Montabaur Castle on the right bank of the Rhine. Henry had the fortress devastated and the archbishop arrested, nevertheless Theoderich was able to finish the construction two years later.
Like his ancestors, he remained a loyal supporter of the Imperial House of Hohenstaufen, backing the young king Frederick II against his Welf rival Otto IV, which earned him the opposition of his counterparts in Cologne and Mainz. He also ensured the election of Frederick's son Henry (VII) as King of the Romans in 1220 and his coronation by Archbishop Engelbert of Cologne two years later. He remained a close confidant of the emperor, whom he accompanied to Italy and Sicily, and also of His son Henry (VII) until his rebellion in 1234.