King Mieszko II died in 1034; his son and heir, Casimir was forced to leave Poland. A period of anarchy followed, which lasted at least until 1039 when Casimir returned. According to Kristó and Makk, Béla was staying in Poland during this period; he even may have administered the kingdom in the name of his absent brother-in-law. On the other hand, the Polish historian, Manteuffel writes that Béla and his two brothers, in contrast with the unanimous report of the Hungarian chronicles, arrived in Poland only with Casimir, after 1039. It is beyond doubt that Levente and Andrew departed from Poland in about 1038, becauseaccording to the "Illuminated Chronicle"they did not want to "live the life of hangers-on in the Duke of Poland's court, regarded only as Béla's brothers".