Last names starting with "O"
Unknown Grad Year
- Class of 1983 Julie O Connor
- Class of 2012 Ryan O Connor
- Class of 1985 Cathy O'Connell
- Class of 1979 Theresa O'malley
- Class of 1977 Antoinette Obidzinski
- Class of 1959 Kath OBoyle
- Class of 1952 Joan Obrian
- Dawn Oconnor
- Class of 1949 Doris OConnor
- Class of 1973 Janice OConnor
- Class of 1979 Marie Odonell
- Class of 1984 Aileen ODonnell
- Class of 1988 Mary OKray
- Class of 1968 Sandra Olszewski
- Gloria Olszewski Kiolbasa
- Tina OMalley
- Helen Ostrowski
- Hellen Ostrowskie
- Mary Oswego
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