John II, Count of Oldenburg


John II of Oldenburg was Count of Oldenburg from 1275 until around 1301.
He was the son of Christian III, Count of Oldenburg and Hedwig von Oldenburg in Wildeshausen. John married twice. His first marriage was to Elisabeth, the daughter of John, Duke of Brunswick and Lunenburg and Liutgard von Holstein-Itzehoe. His second marriage was to Countess Hedwig of Diepholz.
John had five children:
John II of Oldenburg is also the patriline ancestor of Queen Margrethe II of Denmark, Philip, Duke of Edinburgh, and thus of Charles, Prince of Wales and Prince William, Duke of Cambridge.