Dietrich of Horne (? in Horneburg (Westendorf) – 19 January 1402, in Osnabrück) was a German nobleman. He was bishop of Osnabrück from 1376 until his death.

Life Dietrich was a member of the noble von Horne family, who resided at Horneburg Castle (later name Harenburg Castle) northeast of the settlement of Westendorf, today called Bieste, north of Osnabrück.Homepage of the hamlet of Bieste , viewed on 8 December 2010 The settlement of Bieste is now part of the municipality of Rieste. He allegedly had an illegitimate son name Frederick of Horne.Wilhelm Kohl: Das Domstift St. Paulus zu Münster, Online, viewed on 8 December 2010, cited by books.google.de

In 1376, the cathedral chapter of the Bishopric of Osnabrück elected Dietrich , i.e. as the new bishop. At the time of this election, the bishopric was involved in several disputes and was heavily indebted. All of its castles — except the castle in Quakenbrück — were occupied by Count Otto VI of Tecklenburg. A conflict arose when Otto VI remanded that Dietrich should concentrate on the religious affairs of his diocese, leaving worldly power in his bishopric to the counts of Tecklenburg.Heinrich Schmidt: Bischof und Kirche im Spiegel norddeutscher Bischofschroniken des späten Mittelalters, in: Ulrich Köpf (ed.): Wissenschaftliche Theologie und Kirchenleitung: Beiträge zur Geschichte einer spannungsreichen Beziehung, Festschrift für Rolf Schäfer, Tübingen, 2001, p. 29 ff, Online, viewed on 8 December 2010 Dietrich managed to reconquer several towns, including Vörden, during the course of this conflict.History of Vörden , viewed on 8 December 2010

During his tenure there was also a dispute with the Order of Saint John, Commandry of Lage, who refused to pay taxes to the bishopric. In 1384, Dietrich ordered a raid on the commandry, probably on 18 February. During the raid, the commandry was destroyed.History of the St. Paul parish in Vörden, viewed on 8 December 2010 After a long struggle, he reimbursed the commandry, so that it could be rebuilt.History of the Commandry at Lage , viewed on 8 December 2010

In 1398, the cathedral chapter of Osnabrück decided that during the rest of his tenure only nobleman and graduates could join the chapter.History of the diocese of Osnabrück, viewed on 8 December 2010 In 1400, the border with the Diocese of Münster was modified: the district of Cloppenburg was transferred to Münster; the County of Lingen and the Lower Stift of Münster were transferred to Osnabrück (for religious affairs only; Münster retained worldly power in the Lower Stift).

Towards the end of his reign, he was weakened by old age and illness. Leading circles in the bishopric opposed him and he had to appoint a coadjutor to resist them.See Schmidt, p.50, footnote 72

References Carl Stüve: Geschichte des Hochstiftes Osnabrück bis zum Jahr 1508, vol. 1, Osnabrück, 1853, p. 251 ff

Footnotes