James O'Brien
John O'Brien
Kennedy O'Brien
Michael O'Brien
James O'Brion
John O'Brun
Daniel O'Connor
P O'Connor
Patrick O'Day
Michael O'Dea
James O'Donnell
Patrick O'Donoghue
James O'Grady
John O'Meara
O'Neil, Abbott
O'Neil, Benjamin
O'Neil, James
O'Neil, Minchin
Ellen O'Neill
James O'Neill
John O'Neill
John O'Neil
Michael O'Neill
Richard O'Neill
Thomas O'Neill
John O'Shannessy
John O'Toole
Richard Ocock
James Oddie
John Odgers
John Ogier
Mrs Oliver
Matthew Orr
George Osborne
Robert Osborn
William Otway
John Owens
Francis Oxley
