Duchy of Cornwall from Duchy income, assisted by Grants-in-aid from the Queen. If there is no duke (for example, if the monarch does not have any male children) the duchy income reverts to the monarch and the annual Sovereign Grant is reduced annually by the amount of the duchy's income. The duchy was established on 17 March 1337 by the Royal Great Charter out of the former Earldom of Cornwall by Edward III for his son, Edward, Prince of Wales, the "Black Prince", who became the first Duke of Cornwall. The charter established that the Duke of Cornwall is to be the eldest
Prince of Tarnovo of a Prince of Tarnovo is also titled Princess of Tarnovo (, "Knyagina Tarnovska"). The last Prince of Tarnovo was Prince Kardam, the eldest son of Tsar Simeon II. People who to have held the title Prince of Tarnovo: Since the monarchy's abolition, these are the people who have held the title Prince of Tarnovo in pretense: Prince of Tarnovo Prince of Tarnovo (, "Knyaz Tarnovski") is the title held by the first-born son of the Bulgarian monarch. This title is held only by the heir to the throne. Tarnovo (Veliko Tarnovo) was an old Bulgarian capital and the strongest