Donnchadh the Fat macConchobhair O'BRIEN -- to -- Mary Ann O'CONNOR
Una ("Agnes") O'CONNOR -- to -- Cacht O'MOORE
Cuchory O'MOORE -- to -- Harriet Ethel OAKES
Lena OAKES -- to -- Johanna OBER
John OBER -- to -- Mistui I of The OBOTRITES
Mistui II, Prince of OBOTRITES -- to -- Elizabeth OF Greece.
Vaclav II OF BOHEMIA and Poland -- to -- Alexander OGILVY
Angus James Bruce OGILVY -- to -- Sir Robert OGLE
Sir Robert OGLE -- to -- Ragnhild OLAFSDATTER
Ulfhild OLAFSDOTTER -- to -- George OLDENBURG
George II OLDENBURG -- to -- Mary J. OLIVER
Sarah OLIVER -- to -- Olive OLSON
Claude Newton OMEY -- to -- Racheal Elizabeth ORANGE
William "The Silent", Prince of ORANGE -- to -- Emerson ORCUTT
Ernest ORCUTT -- to -- Warren ("Jake") M. ORCUTT
William ORCUTT -- to -- Martha S. ORDWAY
Mary ORDWAY -- to -- Isabelle of ORLéANS-BRAGANZA
Pedro de Alcantara of ORLéANS-BRAGANZA -- to -- Grace Ella ORR
Isabel ORR -- to -- Frank H. ORSBORN
Roberta Martha ORSBORN -- to -- Estella Bernice OSBORN
Freswith\Friedeswide, wife of William OSBORN -- to -- Ann OSGOOD
Benjamin Howard (Jr) OSGOOD -- to -- Sarah OSGOOD
Sarah Parker OSGOOD -- to -- Eric Philip OSWALD
Gregory Scott OSWALD -- to -- Leslie E. OTT
Maria OTT -- to -- Maredudd ab OWAIN
Maredudd Ap OWAIN -- to -- Mary C. OWEN
Pamela Ann OWEN -- to -- William Brooke T. OWENS
Jane OWSLEY -- to -- Samuel PACKARD
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