He was the third son of Duke Wenceslaus I of Zator by his wife Maria, daughter of Urban Kopczowski, a noblemen from the Duchy of Siewierz.

However, this agreement was null because didn't count with the approval of the Dukes of Zator's sovereign, King Casimir IV of Poland.

However, either him or any of his brothers leave legitimate surviving offspring; for this, on 29 July 1494 Jan V sold his land to the Polish King John I Albert for the amount of 80,000 florins.

Since then the formal owner of the Duchy was Poland, but Jan V retain his title and owned several properties in the area, were continue to live.

14 August 1521), who, after the death of his father, was placed under the care of the Starost Kościelecki by orders of King Sigismund I the Old, in whose court Jan was educated.