WILLIAMSTOWN, a village, in the parish of BOOTERSTOWN, barony of HALF-RATHDOWN, county of DUBLIN, and province of LEINSTER, 3½ miles (S. E.) from Dublin, on the road to Kingstown and Bray: the population is returned with the parish. This village is situated upon the southern shore of the bay of Dublin, close to the Dublin and Kingstown railway, with which it communicates for the purpose of taking up or setting down passengers. It is much frequented in the summer months as a bathing-place, from its fine, smooth, sandy beach and its baths. Here is a station of the metropolitan police. The twopenny post has three deliveries daily from the city, and a constant communication is kept up with Kingstown. In the immediate vicinity are several neat villas, which embrace a fine prospect of the bay: the principal are Ruby Lodge, the residence of T. Bradley, Esq.; Belleview, of Hickman Kearney, Esq.; Seafort Lodge, of E. Tring, Esq.; Caroline Lodge, of R. Doyle, Esq.; Westfield, of M. Dunphy, Esq.; and Williamstown Castle, of J. Boyd, Esq. Here are two eminent boarding schools; Castledawson, conducted by the Rev. A. Leney; and Seafort, by the Rev. D. W. Cahill.