The castle was founded sometime in the first decade of the 14th century by Markvartic Zdislav, the son of Havel of Lemberk, a burgrave at Prague Castle and his wife, beatified Zdislava
The castle was founded sometime in the first decade of the 14th century by Markvartic Zdislav, the son of Havel of Lemberk, a burgrave at Prague Castle and his wife, beatified Zdislava. Zdislav (of Lemberk) is mentioned in historic documents during the 1273 - 1318 period. His sons Heřman and Markvart are mentioned under their new family residence in Zvířetice.
The ruin of the castle, situated some 4 km to the north from Mladá Boleslav, was renovated first in the late Gothic style; during the Renaissance period it was rebuilt in a fortified chateau. The manor residence was damaged by the fire of 1720 and has never been restored. The present look of the ruin, whose dominant element is the half-preserved cylindrical tower, co-creates the unique romantic panorama of the valley of the Jizera River.
http://cesky-raj.info/