Vladislaus II of Opole, nicknamed Naderspan, was Duke of Opole from 1356, Count palatine of Hungary (1367–1372), Duke of Wieluń (1370–1392), Governor of Ruthenia (1372–1378), Count palatine of Poland (1378) as well as Duke of Dobrzyń, Inowrocław (1378–1392), Krnov and Kuyavia (1385–1392).

Wieluń is a town in south-central Poland with 21,624 inhabitants (2021). The town is the seat of the Gmina Wieluń and Wieluń County, and is located within the Łódź Voivodeship. Wieluń is a capital of the historical Wieluń Land.