Barons of Plessen Freiherren von Plessen Records #7 Holders Family filter On/Off Christian, baron of Plessen * 1940 Helmold, baron of Plessen * 1935 Johann Christian, baron of Plessen * 1965 Johann, baron of Plessen * 1890 Karl Leopold Peter, baron of Plessen * 1938 Leopold, baron of Plessen * 1894 Magnus-Leopold, baron of Plessen * 1967 Corrections and Updates To suggest a correction or an update. Click Here