Ireland Great Northern Railway 1876 - 1953
Formed in 1876 by a merger of the Irish North Western Railway (INW), Northern Railway of Ireland, and Ulster Railway. The partition of Ireland in 1921 created an international frontier through the GNRI's territory. In 1953 the company was jointly nationalised by the governments of the Republic of Ireland and Northern Ireland. The two governments ran the railway jointly under a Great Northern Railway Board until 1958.