Conrad I, Count of Oldenburg Count of Oldenburg (1250–1347) Parents Hedwig von Diepholz John II of Oldenburg Children Conrad II of Oldenburg Christian V, Count of Oldenburg Gerhard of Oldenburg Agnes of Oldenburg Siblings John III, Count of Oldenburg Christian IV, Count of Oldenburg Maurice of Oldenburg Agnes of Oldenburg Richarda of Oldenburg Gisela of Oldenburg Partners Ingeborg von Holstein-Segeburg