John O'BRIEN ( - )
Eusebious O'BRISSELL ( - )
Mary O'BRISSELL ( - )
Thomas O'BRISSELL ( - )
Benjamin O'REAR ( - )
Jeremiah O'REAR ( - )
Anne OLCOTT ( - )
Henry S. OLD (1796 - 1866)
George Harold OLSEN (4 Aug 1941 - )
Stefan James OLSEN (16 Apr 1979 - )
Tonia Leo OLSEN (8 May 1972 - )
Reinert Oliver OLSON ( - )
Nancy Jane ONEAL (1810 - )
Sarah C. ORR ( - ABT. 1845)
??? ORRICK ( - )
Mary OSBORN (1694 - 5 Feb 1779)
Phoebe OSBORNE ( - 22 Nov 1850)
Jane Wilson OSBOURNE (17 Sep 1972 - )
Richard C. OSBOURNE ( - )
Wilson Boyd OSBOURNE (24 Mar 1932 - )
Clayton OTTS (20 Jan 1923 - )