Janusz I of Warsaw
Polish noble
- Fame48.2
- Momentum0.2
- Wikipedia2K
Source-basedFalling
Lived 1347–1429, aged 82
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Summary
Updated 2026-06-14
Janusz I of Warsaw, also known as Janusz I the Old, was a Polish prince member of the House of Piast in the Masovian branch, from 1373/74 Duke of Warsaw and after the division of the paternal inheritance between him and his brother in 1381, ruler over Nur, Łomża, Liw, Ciechanów, Wyszogród and Zakroczym. In addition, he was a vassal of the Polish Kingdom since 1391 for the fief of Podlachia.
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Fame
Falling48.2
Composite of search demand, mentions, audience & graph footprint.
Score components
Momentum0.2
Historical10.5
Source confidence60.0
Completeness40.0
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- 雅努斯一世Low confidencewikipedia · zh.wikipedia.org
- يانوش الاول ملك وارسوLow confidencewikipedia · arz.wikipedia.org
- Janusz I. StarszyLow confidencewikipedia · de.wikipedia.org