George IV

George IV was the King of the United Kingdom from 1820 until his death in 1830, and also served as Prince Regent for his father, King George III, from 1811 to 1820. He is known for his extravagant lifestyle as a prince, the Regency Era during which the Napoleonic Wars concluded, and his later role as king, which is remembered for the expansion of Britain's influence and his patronage of the arts. He was the son of King George III and Queen Charlotte, and was succeeded by his younger brother, William IV.  As Prince and Regent Regency Era: George became Prince Regent in 1811 when his father, King George III, suffered a mental illness. This period is known as the Regency Era, which saw the final defeat of Napoleon. Extravagant lifestyle: As a prince, he led a lavish and extravagant life, contributing to the fashion and style of the Regency period. He was known for his love of parties, gambling, and building projects like the Royal Pavilion in Brighton. Intellectual abilities: Despite his reputation for indulgence, he was also an intelligent man who spoke multiple languages and had a passion for art and architecture.  As King Reign: He became King of the United Kingdom in 1820 and reigned until his death in 1830. Role in government: He generally allowed his prime minister to handle the day-to-day affairs of state, a role that saw the growing power of Parliament. Key accomplishments: He supported the passage of the Catholic Relief Act of 1829, which granted Catholics more rights in Ireland. He also developed the ceremonial side of the monarchy and undertook major building projects, including extensive renovations of Buckingham Palace and Windsor Castle. Personal life: His marriage to Princess Caroline of Brunswick was a failure. He was also a patron of arts and architecture, commissioning architect John Nash for projects like Regent Street and Regent's Park.