What is "clonmethan"

Clonmethan (; formerly also Clonmelkin, Kilmethan, or Glimmethan) is a townland and a civil parish in the ancient barony of Balrothery West, Fingal in Ireland. It is bordered by the parishes of Palmerstown to the west, Grallagh to the north, Hollywood to the northeast, Westpalstown to the east, Killossery to the southeast, Killsallaghan to the south, and Greenoge, County Meath to the southwest.