KILMACOW, a parish, in the barony of ARKLOW, county of WICKLOW, and province of LEINSTER, 2¾ miles (S. S. E.) from Rathdrum, on the lower road from Arklow to Wicklow. This small parish is situated in the vicinity of the Cronebane copper mines, and comprises 816 statute acres. It is a rectory and vicarage, in the diocese of Dublin and Glendalough, forming part of the union of Castlemacadam.