Edmond O'Brien
Virgo
George O'Brien
Aries
Margaret O'Brien
Capricorn
Virginia O'Brien
Aries
Joan O'Brien
Aquarius
Willis H. O'Brien
Pisces
Erin O'Brien-Moore
Taurus
Arthur O'Connell
Aries
Una O'Connor
Scorpio
Donald O'Connor
Virgo
Denis O'Dea
Taurus
Cathy O'Donnell
Cancer
Martha O'Driscoll
Pisces
George O'Hanlon
Sagittarius
Dan O'Herlihy
Taurus
Michael O'Herlihy
Aries
Dennis O'Keefe
Aries
Rex O'Malley
Capricorn
Anne O'Neal
Capricorn
Barbara O'Neil
Cancer
Maureen O'Sullivan
Taurus
