Alexander McDonnell (engineer)
Alexander McDonnell was an Irish locomotive engineer and civil engineer. He was born in Dublin onDecember 1829 and died in Holyhead onDecember 1904. He was educated at Trinity College, Dublin, where he graduated with an Honours degree in Mathematics. He brought order and standardisation to the workshops and locomotive designs of the Great Southern and Western Railway of Ireland, and was later employed to do the same for the North Eastern Railway in England, although resistance to his changes meant that he left before the task had got very far.
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Source: Wikipedia