Bolesław IV the Curly, High Duke of Poland (born 1120)

Bolesław IV the Curly

High Duke of Poland

Bolesław IV the Curly, a member of the Piast dynasty, was Duke of Masovia from 1138 and High Duke of Poland from 1146 until his death in 1173.

List of Polish monarchs

Poland was ruled at various times either by dukes and princes or by kings. During the latter period, a tradition of free election of monarchs made it a uniquely electable position in Europe.