Question: What town on the Castletown River was the home of a famous radiologist who lived from 1900-1979

full_context: Document 1: W. Ironside Bruce: William Ironside Bruce (1876 – 21 March 1921) was a physician in Europe who conducted early research on the use of X-rays. He headed the X-ray departments at Charing Cross Hospital and at the Hospital for Sick Children. He wrote an early book on X-ray techniques and he was president of the radiology section of the Royal Society of Medicine. In 1921, Bruce was diagnosed with aplastic anaemia, which his physicians attributed to his work with X-rays. He died two months after being diagnosed with the illness. Bruce's death led to the establishment of an X-ray safety committee in Great Britain.
Document 2: Peter Holden (doctor): Peter J P Holden (born around 1956) is doctor who works as a general practitioner in Matlock, Derbyshire. He is a member of the Council of the British Medical Association, who was a negotiator with the General Practitioner’s Committee (GPC) for more the 15 years.
Document 3: Henry Jellett (gynaecologist): Educated at the University of Dublin, he was later Professor of Midwifery there. During World War I he was Commandant of the Munro Ambulance Corps in Northern Flanders and was Mentioned in Despatches, also winning the Chevalier de l’Ordre de la Couronne de Belgique and the Croix de Guerre, Française (with two stars). When peace returned he was consultant at the Rotunda Hospital, Dublin from 1910 to 1919. Later he was consultant obstetrician to the New Zealand Department of Health. He died on 8 June 1948.
Document 4: River Finn (County Donegal): The River Finn (Irish: "Abhainn na Finne" ) is a river that flows through County Donegal in the Republic of Ireland and County Tyrone in Northern Ireland. It rises in Lough Finn in County Donegal and flows east through a deep mountain valley to Ballybofey and Stranorlar (on opposite sides of the river) and on to the confluence with the River Mourne at Lifford. From Castlefin downstream the river is tidal, becoming deeper towards Strabane. The Finn is 40 mi long and together with its tributary the Reelin River, drains a catchment area of 195 square miles. The River Foyle is formed by the confluence of the River Mourne and the River Finn, west of Lifford Bridge. The area which the River Finn flows through is called the Finn Valley. The village of Clady, near Strabane in County Tyrone, is on the River Finn. The football club in Ballybofey, Finn Harps, is named after the river.
Document 5: Dundalk: Dundalk ( , Irish: "Dún Dealgan" , meaning "Dalgan's fort" ) is the county town of County Louth, Ireland. It is on the Castletown River, which flows into Dundalk Bay, and is near the border with Northern Ireland, halfway between Dublin and Belfast. It has associations with the mythical warrior hero Cú Chulainn.
Document 6: Dunluce Upper: Dunluce Upper (Irish: "Dún Libhse Uachtarach" ) is a barony in County Antrim, Northern Ireland. It is bordered by six other baronies: Dunluce Lower to the north; Cary to the north-east; North East Liberties of Coleraine to the north-west; Coleraine to the west; Kilconway to the south; and Glenarm Lower to the east. Dunluce Upper also formed part of the medieval territory known as the Route.
Document 7: Castletown River: The Castletown River is a river which flows through the town of Dundalk, County Louth, Ireland. It rises near Newtownhamilton, County Armagh, Northern Ireland, and is known as the Creggan River in its upper reaches. Its two main tributaries are the Kilcurry and Falmore rivers and it enters the Irish Sea at Dundalk Bay on the east coast of Ireland. The Castletown River flows in at the northwest corner of Dundalk Bay creating a deep channel through the intertidal zone. It is routinely dredged for navigation purposes for the deep water port of Dundalk.
Document 8: Dundalk F.C.: Dundalk Football Club ( ; Irish: "Cumann Peile Dhún Dealgan" ) is an Irish professional association football club based in Dundalk, County Louth. The club currently plays in the League of Ireland Premier Division and are the current reigning champions. Founded in 1903, it is the second most successful team, in terms of trophies won, in the history of the League of Ireland. The traditional colours of the club are white jerseys with black shorts. Because of the white jerseys, the team has been nicknamed The Lilywhites. Home games are played in Oriel Park. A local rivalry is shared with Drogheda United, their Louth neighbours, who entered the League in 1963 as Drogheda FC and later became Drogheda United in 1975.
Document 9: Dundalk (UK Parliament constituency): Dundalk was a parliamentary borough constituency in Ireland, which returned one Member of Parliament (MP) to the House of Commons of the Parliament of the United Kingdom. It was an original constituency represented in Parliament when the Union of Great Britain and Ireland took effect on 1 January 1801, replacing the Dundalk constituency in the Parliament of Ireland.
Document 10: Peter Kerley: Sir Peter Kerley CVO (1900–1979) was a radiologist from Dundalk, Ireland.
Document 11: G. C. Peden: George C. Peden is an emeritus professor of history at Stirling University, Scotland. He has written about the British Treasury; Keynesian economics; economic aspects of defence and foreign policy; the welfare state, and some recent Scottish economic history. He was born in Dundee in 1943 and educated at Grove Academy, Broughty Ferry. He worked for eight years as a sub-editor of the Dundee Evening Telegraph before becoming a mature student at Dundee University, graduating MA with first class honours in modern history in 1972. He was a postgraduate at Brasenose College, Oxford, and a research fellow at the Institute of Historical Research, London, and graduated D.Phil from Oxford in 1976, having completed his thesis under the supervision of Professor N.H. Gibbs. He was a temporary lecturer in history, Leeds University, 1976-7; lecturer in economic and social history, and then reader in economic history, Bristol University, 1977–90; and professor of history, Stirling University, 1990-2008. He was a British Academy research reader, 1987-9, and visiting fellow, All Souls College, Oxford, 1988-9, and St Catherine's College, Oxford, 2002. He is a fellow of the Royal Society of Edinburgh. According to the first version of this article, probably written by a student, Peden had a reputation for insisting on high standards of grammar in essays, perhaps reflecting his earlier career as a sub-editor. He lives in Callander, on the edge of the Scottish Highlands, and divides his time between hillwalking and research and writing.
Document 12: Dunluce Castle: Dunluce Castle (from Irish: "Dún Libhse" ) is a now-ruined medieval castle in Northern Ireland. It is located on the edge of a basalt outcropping in County Antrim (between Portballintrae and Portrush), and is accessible via a bridge connecting it to the mainland. The castle is surrounded by extremely steep drops on either side, which may have been an important factor to the early Christians and Vikings who were drawn to this place where an early Irish fort once stood.
Document 13: Joseph Patrick Slattery: Father Joseph Patrick Slattery, C.M. (21 May 1866 – 31 March 1931) physicist, radiologist, Catholic priest, pioneer in the field of radiography in Australia and credited with the first use of fluoroscopy in Australia. In 1866, born in Waterford, Ireland. Traveled to Australia as a deacon in 1888. Ordained as a priest by Cardinal Moran. As a member of the Vincentian Congregation, he and several of his confreres took over the running of St Stanislaus' at Bathurst from the diocesan clergy. Appointed to the position of professor and taught science, including physics and chemistry. Slattery had a keen interest in the new technology of wireless radio and was the first to install a wireless set west of the Blue Mountains. He was an early pioneer of radio in Australia and found delight in building radio sets. Slattery built an X-ray practice at Bathurst and local doctors benefited greatly from this convenience. He performed mission work for the Vincentian fathers and toured Australia and New Zealand to serve the faithful. Slattery was superior of the Vincentian novitiate at Eastwood. He was appointed vice-rector of St. John’s College at the University of Sydney. At Springwood and Manly, he was spiritual director of the seminaries for 6 years. Slattery performed parish work for the last 3 years of his life. In 1931 he died and was buried in Rookwood Cemetery at Sydney, New South Wales, Australia.
Document 14: Colum Kenny: Colum Kenny is an author and emeritus professor at Dublin City University (DCU), in Dublin, Ireland. Emeritus Professor, B.C.L., Barrister-at-Law, Ph.D. Columnist for the "Irish Times". Formerly chair of the Masters in Journalism programme at DCU. School of Communications faculty 1982-2015. Areas of special interest include media and culture, history and society. A member of the Broadcasting Authority of Ireland 2010-2015 and of the Broadcasting Commission of Ireland/IRTC 1998-2003. A former employee of RTE, he was a founding board member of the E.U. Media Desk in Ireland and is a council member of the Irish Legal History Society. He was a member of the Media Mergers Advisory Group that reported to the Minister for Enterprise, Trade and Employment in 2008. The author of many academic articles on cultural and media matters, he is also a member of the National Union of Journalists and a frequent contributor to media debates and a consultant on communications. Awarded the DCU President's Award for Research in the Humanities and Social Sciences, 2004/5.
Document 15: Dungiven: Dungiven (from Irish: "Dún Geimhin" , meaning "Gevin's fort" ) is a small town, townland and civil parish in County Londonderry, Northern Ireland. It is on the main A6 Belfast to Derry road. It lies where the rivers Roe, Owenreagh and Owenbeg meet at the foot of the 1525 ft Benbradagh. Nearby is the Glenshane Pass, where the road rises to over 1000 ft . It had a population of 2,993 people in the 2001 Census, an increase of 6% over 1991. It is within Causeway Coast and Glens district.
ground_truth: Dundalk