Casimir III, Duke of Pomerania (1348–1372), oldest son of Barnim III, Duke of Pomerania-Stettin
William III of England | George III of the United Kingdom | Henry III of England | George III | Edward III of England | Henry III | Edward III | Charles III of Spain | William III | Loudon Wainwright III | WTA Tier III tournaments | Richard III of England | Benigno Aquino III | Pope Alexander III | Star Wars Episode III: Revenge of the Sith | Henry III of France | Gustav III of Sweden | Shalmaneser III | Alexander III of Russia | Albatros D.III | Frederick III | Rainier III, Prince of Monaco | Otto III | Frederick William III of Prussia | Victor Emmanuel III of Italy | III | Frederick III, German Emperor | Casimir IV Jagiellon | Wade Hampton III | Philip III of Spain |
The written history of Boronów begins in the 13th century in documents of Casimir III, but on that area wolder relicts from Neolithic and Lusatian culture were found by archeologist in the 1920s.
The Jagiellonian University, founded in 1364 by King Casimir III in Kraków, is one of Europe's oldest universities.
Louis released Holland and Hainaut for his brothers William I and Albert I in 1349, since he expected to acquire the Polish crown by his marriage with Cunigunde of Poland, a daughter of Casimir III and Aldona Ona of Lithuania.
When Casimir III the Great died in 1370, under agreements concluded with one of his lifetime friends Siemowit III, he freed Siemowit from Polish suzerainty and gave Płock, Wizna, Wyszogród and Zakroczym back to Mazovia.