THE DATE BEHIND THE NAME
Janusz I of Warsaw
Polish noble
Janusz I of Warsaw was born in 1347 and died on December 17, 1429.
Born
in 1347
Died: December 17, 1429
Source:
No external source identified
Synchronized from Wikidata on October 5, 2026.
Original calendar: Julian. This broad date cannot be represented as a single Gregorian date; the original value is shown.
- Professions
- aristocrat
- Citizenship
- Poland
More about Janusz I of Warsaw
Family
- Father
- Siemowit III, Duke of Masovia
- Sibling
- Siemowit IV
All birth date sources
A source is P248 “stated in” or a non-Wikimedia reference URL. Import-only references do not qualify.
No external source identified
Synchronized from Wikidata on October 5, 2026. View Wikidata record
Questions people ask
When did Janusz I of Warsaw die?
Janusz I of Warsaw died on December 17, 1429.