Broadstone (An Clochán Leathan) is a very old area of Dublin.
Here is an interesting article about its history.
Here is its Wikipedia entry which again contains some interesting content about the area.
Unlike many other Dublin areas, Broadstone doesn't have a village or 'High Street' and because of this, a lot of people don't know it exists. However, it looks like this will change with the recent announcements of Grangegorman DIT and the new LUAX BX line. The main entrance to the new DIT campus will be across the road from our garden, and there will be a new LUAS stop called 'Broadstone'.