| 1. | Thus since William IV all other Grand Dukes have been Catholic.
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| 2. | He was promoted to King William IV on 22 July 1830.
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| 3. | In 1841 Frederick William IV named Persius as his court architect.
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| 4. | In 1833 King William IV granted the Society his Royal Patronage.
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| 5. | This includes Frederick William IV of Prussia and his Russian students.
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| 6. | King Frederick William IV of Prussia created her Baroness of Barnim.
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| 7. | He became landscape painter to William IV of England in 1826.
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| 8. | From 1843 to 1846 William IV resided at Witley Court.
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| 9. | The purpose was to honor the birth of William IV in 1906.
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| 10. | It was named in honour to King Frederick William IV of Prussia.
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