Thomas NYE -- to -- Fiona Mace O'CONNELL
Francis ("Frank") Dwyer O'CONNELL -- to -- Patricia J. O'HALLORAN
Robert O'HALLORAN -- to -- More O'TOOLE
Doris Eleanor OAKES -- to -- Hezekiah OBER
J. Hamilton OBER -- to -- Mieceslas I of The OBOTRITES
Mieceslas of The OBOTRITES -- to -- Cuno, Count of OEHRINGEN
Itha of OEHRINGEN -- to -- Jonathan OGDEN
Mary OGDEN -- to -- Margaret OGLE
Phillis OGLE -- to -- Dana Mark OHLSSON
Stefen Gray OHLSSON -- to -- Constantine II OLDENBURG
Daniel Frederick Augustus OLDENBURG -- to -- John OLIPHANT
John OLIPHANT -- to -- Anna OLSDATTER
Helen Wynona OLSEN -- to -- William I OR "WILLIAM II" of Burgundy
Dorothy Ellenor ORAM -- to -- Charles W. ORCUTT
Clarinda ORCUTT -- to -- Harold Lee ORD
Aaron Patterson ORDWAY -- to -- Hlodve (The Viking), Earl of ORKNEY
Sigurd ("the Corpulent"), Earl of ORKNEY -- to -- Louise Elizabeth of ORLEANS
Marie Louise Elizabeth of ORLEANS -- to -- James ORRICK
John ORRICK -- to -- William ORTH
Alfrind ORVARDDI -- to -- William OSBORN
William OSBORN -- to -- Mary OSGOOD
Mehitable OSGOOD -- to -- Theodemir, King of the OSTROGOTHS
Charles T. OSWALD -- to -- Rose Martha OTIS
Roxana OTIS -- to -- Llywelyn Ap OWAIN
Maredudd ab OWAIN -- to -- Mary OWEN
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