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Kazimierz I. Piast & Constance Piast Z Wroclawi

Kazimierz I. and Constance were married in a religious ceremony in 1239. They had two sons named Leszek II. 'czerny' and Ziemomysl.

Personal Details
- Kazimierz I. Piast
  Kazimierz I. was born in 1211. He died at the age of 56 on November 14th, 1267.
  
  Constance Piast Z Wroclawi
  She died in 1257.

Children
- Leszek II. 'czerny' Piast z Mazowska
  Leszek II. 'czerny' was born in 1241. He died at the age of 47 on September 30th, 1288.
  
  Ziemomysl Piast Kujawski
  Ziemomysl was born in 1243. He died at the age of 44 in 1287.