Gerhard became involved in the
War of the Lüneburg Succession (1371–1388), as a result of which the
Welfs were obliged in 1380 to cede Burg Koldingen to him. Under his direction the fortress, situated on the left bank of the
River Leine, became the seat of the newly-created Amt Koldingen within the territory of the bishopric of Hildesheim.[5]
References
^A. Bertram: Die Bischöfe von Hildesheim. Verlag August Lax, 1896
^Harald Goder: "Hildesheim", in: Monasticon Cartusiense, ed. Gerhard Schlegel, James Hogg, Band 2, Salzburg 2004, pp. 740–747
^ Helmut Flohr: Rechts und links der Leine. Spurensuche in der Leinemasch zwischen Döhren und Koldingen, Laatzen-Grasdorf 2012, pp. 62 f.
Further reading
Nathalie Kruppa, Jürgen Wilke (eds.): Die Hildesheimer Bischöfe von 1221 bis 1381 (Germania sacra. Historisch-statistische Beschreibung der Kirche des Alten Reiches / 46, Die Bistümer der Kirchenprovinz Mainz. Das Bistum Hildesheim 4). Berlin/New York 2006, pp. 481–604