Albert II of Regenstein

Albert II of Regenstein (c. 1293–1349), son of Count Ulrich III, became regent of the county in 1310. His feud with the bishop of Halberstadt turned violent in 1336, when he raided Quedlinburg's lands and seized its new town; captured that July, legend keeps him for twenty months in a wooden chest in Quedlinburg's town hall.

The 1338 peace made him accept the bishop as the town's protector. In 1349 he was murdered by assassins hired by Bishop Albert II of Halberstadt.