Béla of Hungary I the Champion

  General Notes:

He descended from a younger branch of the Árpád dynasty and spent seventeen years in exile, probably in the court of the Kings of Poland. He came back to Hungary at the request of his brother, King Andrew I who assigned him the government of one third of the kingdom and proclaimed Béla his heir. However, Béla did not want to accept the hereditary rights of his brother's son, Solomon to the throne (Solomon was born after the original agreement) and he rebelled against his brother. Although he managed to ascend to the throne after defeating King Andrew, he could not strengthen his reign and ensure his sons' succession.