Prince William was born on 15 January1776 in Rome, Italy. His father was the Duke of Gloucester and Edinburgh, the third son of the Prince of Wales. His mother was Maria Walpole, Countess of Waldegrave, the illegitimate daughter of Edward Walpole. As a great grandson of King George II he was styled as a Prince of Great Britain with the style His Highness at birth.
The Duke and Duchess of Gloucester and Edinburgh lived at Bagshot Park in Surrey. They had no children together. The Duke died on 30 November1834. He is buried in St George's Chapel, Windsor.