1911 Encyclopædia Britannica/John I. of France

JOHN I. (b. and d. 1316), king of France, son of Louis X. and Clemence, daughter of Charles Martel, who claimed to be king of Hungary, was born, after his father’s death, on the 15th of November 1316, and only lived seven days. His uncle, afterwards Philip V. has been accused of having caused his death, or of having substituted a dead child in his place; but nothing was ever proved. An impostor calling himself John I., appeared in Provence, in the reign of John II., but he was captured and died in prison.