King George III (known as the king who lost America), was born in 1738. King George III's father, the Prince of Wales died when he was young. When George III was 22, in 1760, his grandfather, George II, died. On September 8th, 1761 he married Princess Charlotte Sophia from Mecklenburg-Strelitz, in Germany and on September 22nd, 1761, George III became the King of England. George himself was of partial German ancestry. George and Charlotte had 15 children, one of whom, George IV would be the next king.