Note: Do not rely on this information. It is very old.
Ardglass
Ardglass, a town in County Down, Ireland, at the head of a small bay, 8 miles south of the entrance to Strangford Lough. After the Conquest it became a place of some importance, as is shown by the ruins of five Norman castles in its vicinity. The harbour is good, being accessible to vessels of 500 tons at all states of the tide.