skos:altLabel | - 1834
- John William
- 1844
- The Earl of Bessborough
- Viscount Duncannon
- Viscount Dungannon
- Frederick Cavendish Ponsonby
- John Ponsonby
- the fourth Earl
- 4th Earl of Bessborough
- <br>John Ponsonby<br>1st '''Baron Duncannon'''<br>
- Baron Duncannon
- Earl of Bessborough
- John Ponsonby, Viscount Duncannon
- John Ponsonby<br>4th Earl of Bessborough
- John William Ponsonby, 4th Earl of Bessborough
- John, Viscount Duncannon
- Lord Bessborough
- Lord Duncannon
- The 4th Earl of Bessborough
- The Viscount Duncannon
- <small>The Right Honourable</small><br>John Ponsonby<br>1st '''Baron Duncannon'''<br>''styled'' '''Viscount Duncannon'''<br><small>PC</small>
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