Dictionary of Medieval Names
from European Sources
CDP3
Julianus Bartoszewicz, editor. Codex Diplomaticus Poloniæ, quo continentur privilegia regum Poloniæ, magnorum ducum Lithvaniæ, bullæ pontificum nec non jura a privatis data, volume 3. Varsaviae, 1858.
Andrea Boleslai Boleslaum Boleslaus Bolezlai Bolezlao Bolezlaus Casimirum Duran Henricus Martino Petrus Woyzlao