Home›13th-century establishments in Poland›Duchy of Sieradz🌐EnglishEnglishDeutschFrançaisPolskiРусскийEntityQ5311386· pop 6· linked from 71 articlesDuchy of SieradzPolish duchy (1231–1339)Wikidata factsShow 2 more factsinception1231-01-01dissolved, abolished or demolished date1339-01-01via Wikidata · CC0Available in 6 languagesFrançaisDeutschРусскийLithuanianPolskivia Wikidata sitelinks · CC0ConnectionsLatinEntityPolandCountryCategories13th-century establishments in Poland14th-century disestablishments in PolandDuchies of PolandFiefdoms of PolandHistory of Poland during the Piast dynastyPoland articles missing geocoordinate dataStates and territories disestablished in the 1330s