John I of France

John I (15 - November 20, 1316), called the Posthumous was King of France and Navarre, as the posthumous son and successor of Louis X of France, for the five days he lived. He thus had the shortest recognized reign of any French king.
He was born a king of the House of Capet and the posthumous son of Louis X of France and Clementia of Hungary. John I was king for five days under his uncle's regency, until his death on November 20, 1316. John I was buried in Saint-Denis Cathedral. He was succeeded by his uncle Philip V of France.