Back Willem IV, Prins van Oranje Afrikaans فيليم الرابع أمير أورانيا Arabic Вилхелм IV (Орания) Bulgarian Guillem IV d'Orange-Nassau Catalan Vilém IV. Oranžský Czech Vilhelm 4. af Oranien Danish Wilhelm IV. (Oranien) German Γουλιέλμος Δ΄ της Οράγγης Greek William IV, Prince of Orange English Guillermo IV de Orange-Nassau Spanish
Willem IV van Oranje-Nassau (Leeuwarden 1711-1751 Den Haag) , pe Willem IV Carel Hendrik Friso van Oranje-Nassau, a oa stathouder ar Proviñsoù-Unanet.
Dimezet e oa da Anna van Hannover(1709-1759).
Tad e oa da Willem V van Oranje-Nassau
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