Viscounts Lismore (1806)
- Cornelius O'Callaghan, 1st Viscount Lismore (1775–1857)
- George Ponsonby O'Callaghan, 2nd Viscount Lismore (1815–1898)
Read more about this topic: Viscount Lismore
Viscounts Lismore (1806)
Read more about this topic: Viscount Lismore