Tags: Noble.
Boleslaw II of Masovia or Boleslaw II of Płock (c. 1251 – 20 April 1313) was a ruler of Masovia. He was the younger brother Konrad II of Masovia and son of Siemowit I of Masovia. His mother was Pereyaslava daughter of Daniel of Galicia.Boleslaus became Duke of Masovia in 1262. In 1275 he shared Masovia with his brother and he became Duke of Płock. From 1294 Boleslaus reigned over all of Masovia. In 1288 he became Duke of Sandomierz.
