The oldest brother, Wenceslaus II took up the guardianship for his younger half-brothers William, Ernest and Przemko II, while Wenceslaus's younger brother Nicholas IV styled himself Lord of Zlaté Hory.
William and Ernest received shares of Opava; the Duchy of Głubczyce was split off for Wenceslas.
[1] The youngest brother, Przemko II, was destined for an ecclesiastical career and did not receive a share of the duchy.
William accepted his election and changed from a robber baron into a defender of the peace.
As their guardian, he sold William's 2/3 share of Opava to Duke Bolko V of Opole, in or after 1454.
On 8 March 1456, Ernest sold the Duchy of Münsterberg to George of Poděbrady, who would be elected King of Bohemia in 1458.