Mieszko II the Fat was a Duke of Opole-Racibórz from 1230 until his death, and Duke of Kalisz-Wieluń during 1234–1239.
He was the eldest son of Duke Casimir I of Opole by his wife Viola, probably a Bulgarian woman. Wikipedia
Born: 1220
Died: October 22, 1246 (age 26 years)
Grandparents: Mieszko IV Tanglefoot, Kaloyan of Bulgaria, Boril of Bulgaria, and more
Great-grandparents: Władysław II the Exile, Agnes of Babenberg, Otto III., and more
Parents: Casimir I of Opole and Viola, Duchess of Opole
Partner: Judith of Masovia (1239–)