Barons of Hoenning O'Carroll Freiherren von Hoenning O'Carroll Records #4 Holders Family filter On/Off Albert, baron of Hoenning O'Carroll * 1946 Leopold, baron of Hoenning O'Carroll * 1945 Nikolaus, baron of Hoenning O'Carroll * 1972 Zdenko Leopold, baron of Hoenning O'Carroll * 1943 Corrections and Updates To suggest a correction or an update. Click Here