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Dictionary of Medieval Names
from European Sources

Boleslav m. Slavic bole 'large; more' + Slavic sława, slava 'glory, fame'.

The name of two 10th and an 11th C king of Bohemia, two 11th C kings of Poland, and a 12th C king of Sweden.

Czech Republic
Latin
1353 Bolech (nom) chlumecky 44, p. 23; 1356 Bolicone (abl) ibid. 138
Germany
Latin
1230 Boleslao (abl) hennes-vol1 p. 89
Cite as: J. Uckelman, S.L. Uckelman. "Boleslav". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2016, no. 1. http://dmnes.org/2016/1/name/Boleslav.