On 12 August 1762, Queen Charlotte gave birth to her first child. Twenty-one years later, to the week, the 15th and youngest was born. All but two children survived to maturity. The eldest of King George III's children, who became Prince Regent and King George IV, is less remembered for his patronage of the arts than for his extravagance, and maltreatment of his wife Caroline. As Commander-in-Chie...