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The Custos Rotulorum of Longford was the highest civil officer in County Longford.

This list is incomplete; you can help by adding missing items. (June 2012)

• 1661–?: Francis Aungier, 1st Earl of Longford (died 1700)
• 1765–1769: George Forbes, 4th Earl of Granard
• 1769–1780: George Forbes, 5th Earl of Granard
• 1780–1813: George Forbes, 6th Earl of Granard
• 1813–1836: George John Forbes, Viscount Forbes

For later (post 1831) custodes rotulorum, see Lord Lieutenant of Longford