Claim: The Great Southern and Western Railway (GS&WR) was an Irish track gauge (1,500 mm (5 ft 3 in)) railway company with a length of 1,100 miles (1,800 km) from 1844 until December 31, 1924.
Evidence: The Great Southern and Western Railway (GS&WR) was an Irish gauge (1,600 mm (5 ft 3 in)) railway company in Ireland from 1844 until 1924. 1,100 miles (1,800 km) 1844–31 December 1924