ISAMNIUM in Ireland, mentioned by Ptolemy (2.2.8) as a promontory north of the Bubinda (river Boyne) == St. John's Foreland, Clogher Head, Dunany Point, Ballashan Point (?). [R.G.L]
Dictionary of Greek and Roman Geography, illustrated by numerous engravings on wood. William Smith, LLD. London. Walton and Maberly, Upper Gower Street and Ivy Lane, Paternoster Row; John Murray, Albemarle Street. 1854.