Custos rotulorum (plural: custodes rotulorum; Latin for "keeper of the rolls") is the keeper of a county's records and, by virtue of that office, the highest civil officer in the county. This is a list of people who have served as Custos Rotulorum of County Roscommon. Robert King, 1st Baron Kingsborough (died 1755) 1772–1797: Edward King, 1st Earl of Kingston 1797–1799: Robert King, 2nd Earl of Kingston 1806–>1819: Robert King, 1st Viscount Lorton (died 1854) For post-1831 custodes rotulorum, see Lord Lieutenant of Roscommon References Roscommon