The County of Wölpe (green area inside red circle) c. 1250
The County of Wölpe (German: Grafschaft Wölpe) was the territorial lordship of a noble family in the Middle Ages in the Middle Weser Region near Nienburg/Weser which folded in 1302. The seat of the counts of Wölpe was the castle site at Erichshagen-Wölpe on the Wölpe stream in the borough of Nienburg in north Germany. The castle itself no longer exists.
Marcus René Duensing: Die Chronik der County of Wölpe, Diepenau 1999, ISBN3-929793-69-5
Ernst Andreas Friedrich: Wenn Steine reden könnten. Band IV, Landbuch-Verlag, Hannover 1998, ISBN3-7842-0558-5
Dieter Riemer: counts und Herren im Erzstift Bremen im Spiegel der Geschichte Lehes, Bremerhaven/Hamburg 1995 (Diss. phil. Oldenburg) S. 141 ff ISBN3-923725-89-2