1025
Bolesław I the Brave, as imagined by Jan Matejko in the 19th century.Image: Jan Matejko · Public domainpolitics · Europe
Poland crowns its first king
By long tradition, Bolesław I the Brave was crowned the first King of Poland at Easter 1025, which fell on 18 April. The exact day and place are not recorded for certain, and historians argue for either Gniezno or Poznań. Bolesław had spent decades building up the Piast state and winning papal favour for a crown. He enjoyed it only briefly, dying that June.
Source: Polish Ministry of Education (ZPE): Boleslav I the Brave - Poland’s first king ↗
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