DALKEY  , a small

port and watering-place of Co . Dublin, Ireland, in the south parliamentary division; 9 M . S.E. of Dublin by the Dublin & South-Eastern railway . Pop. of urban district (19o1), 3398 . It is pleasantly situated on and about Sorrento Point, the southern horn of Dublin Bay . Dalkey Island, lying off the town, has an ancient ruined chapel, of the history of which nothing is certainly known, and a disused battery, which protected the harbour, a landing-place of some former importance . A castle in the town, of the 15th century, is restored to use as offices for the urban district council . There are also ruins of an old church, the dedication of which, like the island chapel, is ascribed to one St Begnet, perhaps a diminutive form of Bega, but the identity is not clear . Until the close of the 18th century Dalkey was notorious for the burlesque election of a " king," a mock ceremony which became invested with a certain political importance .