Glenageary 's an area in the suburbs of south County Dublin, Ireland, part of Dun Laoghaire-Rathdown County. While there's no officially defined boundary, it's surrounded by the areas of Sallynoggin, Dalkey, Dun Laoghaire, Glasthule and Johnstown. The Church of Ireland does have a defined boundary for the Parish of Glenageary. On early 20th century maps Glenageary and Sallynoggin are considered to be the same place and it wasn't until the building of local authority houses in the late 1940's an… (More on Glenageary)