Kazimierz I, Prince of KUJAVIA
He married Eufrozyna, Princess of Oppeln-Ratibor 1257 . Eufrozyna, Princess of Oppeln-Ratibor was born at of Opole, Opole, Poland Abt 1211 daughter of Kazimierz I, Prince of Oppeln Ratibor and Viola Asen, Princess of Bulgaria .
They were the parents of 4
children:
Wladislaw I "the Short" King of Poland
born Abt 1260.
Kazimierz II, Prince of Kujavia
born Abt 1262.
Ziemowit, Prince of Kujavia
born Abt 1264.
Eufemia, Princess of Kujavia
born Abt 1266.
Kazimierz I, Prince of Kujavia died 14 Dec 1267 .