Vladislaus II of Opole (Polish: Władysław Opolczyk, German: Wladislaus von Oppeln, Hungarian: Oppelni László, Ukrainian: Владислав Опольчик; ca.

However, the most important mission of Vladislaus on behalf of King Louis took place two years later (in 1366), when he negotiated conditions of the planned marriage between a niece of the Hungarian ruler and Wenceslaus, son of Emperor Charles IV.

The faithful service to the Hungarian House of Anjou resulted in the appointment of Vladislaus as Count palatine, which made him the most important man in the country after the King.

In 1370, after the death of Casimir III the Great, the Duke of Opole actively participated in preparing the succession of King Louis I of Hungary to the Polish throne.

In 1378 the departure of Queen Elisabeth from Poland to Hungary, forced King Louis to release Vladislaus from his post of Governor and appoint him to the vacant position of Polish Count palatine.

But almost immediately Vladislaus had to face the strong resistance from the Polish nobility, dissatisfied with the decision of King Louis to name his daughters as his heirs, and soon was forced to resign.

In Kuyavia, Vladislaus entered in a dispute over finances with the Bishop of Płock, Dobiesław Sówka, resulting in the Duke's excommunication, which, however, was voided a year later by the Archbishop of Gniezno.

The Duke of Opole also supported the Church career of the eldest son of Bolko III, Jan Kropidło, by trying to obtain for him, despite his young age, the position of the Bishop of Poznań.

However, he wasn't popular among the Polish nobility, and after the engagement between Louis I's daughter Hedwig and William of Habsburg was broken, he supported the candidacy of Duke Siemowit IV of Płock.

The war, which began successfully (for example, with the siege to Nowy Korczyn on 26 July 1393), finally ended in 1396, when the royal army decided to attack the Silesian lands of Vladislaus.

They had two daughters: Because he died without male heirs, Vladislaus' nephews Bolko IV and Bernard inherited the whole Duchy except Głogówek, who was given by the Duke to his wife, Euphemia, as her dower.