Matches in DBpedia 2014 for { ?s ?p Siemowit (or Ziemowit) II of Masovia (1283 – 18 February 1345) was Duke of Masovia from 1310 to 1345. He was a member of the House of Piast. Siemowit was Duke of Warsaw and Liw (1310–1313). In 1313, he became the ruler of Duchy of Rawa. He was regent of Płock (1336–1340).Siemowit was the eldest son of Boleslaus II of Masovia and his first wife Sophie, the daughter of Grand Duke Traidenis of Lithuania.. }
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- Siemowit_II_of_Masovia abstract "Siemowit (or Ziemowit) II of Masovia (1283 – 18 February 1345) was Duke of Masovia from 1310 to 1345. He was a member of the House of Piast. Siemowit was Duke of Warsaw and Liw (1310–1313). In 1313, he became the ruler of Duchy of Rawa. He was regent of Płock (1336–1340).Siemowit was the eldest son of Boleslaus II of Masovia and his first wife Sophie, the daughter of Grand Duke Traidenis of Lithuania.".
- Siemowit_II_of_Masovia comment "Siemowit (or Ziemowit) II of Masovia (1283 – 18 February 1345) was Duke of Masovia from 1310 to 1345. He was a member of the House of Piast. Siemowit was Duke of Warsaw and Liw (1310–1313). In 1313, he became the ruler of Duchy of Rawa. He was regent of Płock (1336–1340).Siemowit was the eldest son of Boleslaus II of Masovia and his first wife Sophie, the daughter of Grand Duke Traidenis of Lithuania.".