Biography of Kasimir I.

Kasimir I. (* 1. January 1211; † 14. November 1267 in Inowrocław) was a herzog von Kujawien, von Sieradz und von Łęczyca. He was 56 years old. He was married to Euphrosine von Oppeln. He had at least 1 child (1 daughter). He was buried at Poland.