John I, king of France and Navarra (born 1316)

John I of France

King of France and Navarre in 1316

John I, called the Posthumous, was the King of France and Navarre, as the posthumous son and successor of Louis X, for the four days he lived in 1316. He is the youngest person to be king of France, the only one to have been king from birth, and the only one to hold the title…