In 1810 George III youngest and best loved child, the Princess Amelia, became dangerously ill and the possibility of her death preyed on her father's mind and brought on his third attack of mental derangement, which incapacitated him from ever reigning again. In 1810 his son, George, Prince of Wales, was appointed Prince Regent. He was born on August 12th 1762 at St James Palace, and until the age of nineteen was kept under strict discipline under which he often rebelled, until at the age of twenty he met Maria Fitzherbert, a commoner, six years his elder, twice widowed, and a Roman Catholic...