Counts of Holstein-Plön Grafen von Holstein-Plön Records #4 Holders Family filter On/Off Adolf IX, count of Holstein-Plön * 1329 Gerhard II, count of Holstein-Plön * 1253 Gerhard IV, count of Holstein-Segeberg * 1301 Johann III, count of Holstein-Plön * c. 1305 Corrections and Updates To suggest a correction or an update. Click Here