Charles III (Spanish: Carlos; Italian: Carlo; 20 January 1716 – 14 December 1788) was the King of Spain and the Spanish Indies from 1759 to 1788. He was the fifth son of Philip V of Spain, but eldest by his second wife, Elisabeth Farnese. In 1731, the 15-year-old Charles became the Duke of Parma and Piacenza, as Charles I, on the death of his childless granduncle Antonio Farnese.