Coolygagan
Is ainm dó Cúil an Ghéagáin
Townland in Clonbullogue electoral division, Clonsast civil parish, Coolestown barony, County Offaly, Ireland.
Catholic parish: Clonbulloge (Kildare and Leighlin)
1848–1864
Griffith's Valuation
1901
National Census
1911
National Census
1926
National Census