Viscounts Guillamore (1831)
- Standish O'Grady, 1st Viscount Guillamore (1766–1840)
- Standish Darby O'Grady, 2nd Viscount Guillamore (1792–1848)
- Standish O'Grady, 3rd Viscount Guillamore (1832–1860)
- Paget Standish O'Grady, 4th Viscount Guillamore (1835–1877)
- Hardress Standish O'Grady, 5th Viscount Guillamore (1841–1918)
- Frederick Standish O'Grady, 6th Viscount Guillamore (1847–1927)
- Hugh Hamon Massy O'Grady, 7th Viscount Guillamore (1860–1930)
- Richard O'Grady, 8th Viscount Guillamore (1867–1943)
- Standish Bruce O'Grady, 9th Viscount Guillamore (1869–1955)
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