Duchy of Münsterberg
The other two thirds of Opava were held by his paternal uncles William and Ernest. In 1451, William transferred his claim on the Duchy of Münsterberg to Ernest and received Ernest's third of Opava in return. Thus, William owned a two-thirds share of Opava. However, William died the following year and Ernest, acting as guardian for William's underage sons, sold this share to Duke Bolko V of Opole. Bolko V died in 1460, and his share of Opava fell to King George of Bohemia as a completed fief. In 1464, John II sold his one-third share to George, who thereby came into full possession of Opava, thus considerably expanding his sphere of influence.