William IV, Prince of Orange
William IV (Willem Karel Hendrik Friso; 1 September 1711 – 22 October 1751) was Prince of Orange from birth and the first hereditary stadtholder of all the United Provinces of the Netherlands from 1747 until his death in 1751.[1] During his whole life, he was furthermore ruler of the Principality of Orange-Nassau within the Holy Roman Empire.
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