Biography
He was raised by the governess Rozyna Małgorzata von Eckenberg. As he was an only child, he was the almost certain candidate as the successor of Ladislaus IV. The French traveller, Le Laboureur described him as a child: ''extremely vivid, lean and agile''. He was also seen as being quick-minded, he was a fast learner, and by the age of seven, he was fluent in not only Polish but German too, and made good progress in Latin. The prince willingly dressed in the Polish fashion, which still further strengthened his position as candidate and endeared him to the Poles themselves. In fact, when someone scolded him in German, he replied in Polish "...I am a Pole, so talk to me in Polish".Stanisław Grzybowski: ''Polish and Lithuanian Acts (1506 - 1648)'' in: ''The great history of Poland'', edited by Stanisław Grodzisk, Krakow 2003, p. 701. In the summer of 1647, the boy suddenly fell ill. According to some, it came from overeating certain fruits, while others claimed that he contractedNotes
References
* Władysław Czapliński: ''the court of Władysław IV'', Warsaw, 1959. *Bozena Fabiani: ''Life at the Royal Palace in the era of the Vasa'', Publisher "Volumen", Warsaw,1996. {{Authority control 1640 births 1647 deaths Polish princes 17th-century Polish people House of Vasa Heirs apparent who never acceded Burials at Wawel Cathedral Royalty and nobility who died as children Sons of kings