William IV of Great Britain

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Definition

William IV of Great Britain (r. 1830-1837) succeeded his elder brother George IV of Great Britain (r. 1820-1830) to become the fifth Hanoverian monarch. William had a successful naval career, and his reign is best remembered for the democratic reforms initiated by the 1832 Reform Act. He was succeeded by his niece, Queen Victoria of Great Britain (r. 1837-1901).

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