Stephen V was King of Hungary and Croatia between 1270 and 1272, and Duke of Styria from 1258 to 1260. He was the oldest son of King Béla IV and Maria Laskarina. King Béla had his son crowned king at the age of six and appointed him Duke of... Wikipedia
Born: October 18, 1239, Buda
Died: August 6, 1272 (age 32 years), Csepel Island, Szigetcsép, Hungary
Children: Ladislaus IV of Hungary, Mary of Hungary, Queen of Naples, Anna of Hungary, and more
Grandchildren: Charles Martel of Anjou, Robert, King of Naples, Louis of Toulouse, and more
Parents: Béla IV of Hungary and Maria Laskarina
Siblings: Yolanda of Poland and Kinga of Poland
Spouse: Elizabeth the Cuman (m. 1253–1272)