O'Connell founds Catholic Association, [226]

O'Connell stands for Clare, [231]

O'Connell starts Repeal movement, [233]

O'Connor, King, [18]

O'Donnell, [283]

Offaly, Thomas, Lord, [65]

Orange Government, [120]

Orange lodges, [225]

O'Malley, Grace, [69]

O'Neill and Cromwell, [92]