Custos Rotulorum of County Londonderry and Down
The Custos Rotulorum of Londonderry and Down was the highest civil officer in counties Londonderry and Down.
Incumbents
Londonderry
- 1663–1665 John Clotworthy, 1st Viscount Massereene
- 1666–1695 John Skeffington, 2nd Viscount Massereene
Down
- 1660–1663 Hugh Montgomery, 1st Earl of Mount Alexander
- 1663–? William Montgomery
- 1678–1683 Michael Hill
- 1683–? Hugh Montgomery, 2nd Earl of Mount Alexander
- ?1693–?1699 Michael Hill
- 1729–1742 Trevor Hill, 1st Viscount Hillsborough
- 1742–1793 Wills Hill, 1st Marquess of Downshire
- 1793–?1801 Arthur Hill, 2nd Marquess of Downshire
Londonderry and Down
- 1803–?1821 Robert Stewart, 1st Marquess of Londonderry
- 1821–1822 Robert Stewart, Viscount Castlereagh
- 1822–?1854 Charles Vane, 3rd Marquess of Londonderry