🌐EnglishEnglishDeutschEspañolFrançaisItalianoPolskiSvenskaРусский中文日本語EntityQ75036· pop 12· linked from 222 articlesSeniorate Province1138–1227 district principality in Duchy of PolandConnectionsfiefdomEntityLeszek I the WhiteEntityCategories12th-century establishments in Poland13th-century disestablishments in PolandDuchies of PolandFiefdoms of PolandFormer administrative regions of Lesser Poland VoivodeshipFormer countries in EuropeFormer monarchies of EuropeHistory of Poland during the Piast dynastyStates and territories disestablished in 1227States and territories established in 1138