Frederick was often involved in feuds, raids and highway robberies in its first decades of his life; his was later nicknamed the Restless or Turbulentus because of this.
William agreed in a treaty dated 1 August 1483 to Mutschierung, that is, sovereignty would still be shared, but the revenues would be divided.
[3] The brothers were on different sides in this feud: William concluded in February 1484 an alliance with the bishop, mediated by his councilor Heinrich von Hardenberg (d. 1492 or 1493), whereas Frederick became Protector of the City of Hildesheim on 7 September 1483.
It consists of eight stanzas and is written in a Low German dialect, apparently at the time of Hildesheim Feud.
Among the persons mentioned in the fifth verse are the duke's councilors Otto von der Malsburg (died: probably 1504) and Heinrich von Hardenberg, as well as the Duke's chancellor Johannes Sibolle (attested: 1474–1498), who played an important role on the Brunswick side in the feud.
They may have advised the capture of Frederick in order to extend their influence over the three principalities of Brunswick, Göttingen and Calenberg.