What town on the Castletown River was the home of a famous radiologist who lived from 1900-1979
Peter Kerley: Sir Peter Kerley CVO (1900–1979) was a radiologist from Dundalk, Ireland. Dundalk:  It is on the Castletown River, which flows into Dundalk Bay, and is near the border with Northern Ireland, halfway between Dublin and Belfast.
i don't know