The 20-minute reign of Louis XIX of France was a direct consequence of the chaotic July Revolution. On August 2, 1830, his father, King Charles X, was forced to abdicate, signing a formal document. About 20 minutes elapsed before his son, Louis-Antoine, technically became King Louis XIX and then promptly countersigned the same document, abdicating in turn. This makes him the most widely cited shortest-reigning monarch. However, another tragic figure shares a similar claim. In 1908, Luís Filipe,