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of Wellington Foundry, Leeds.
1882 Mr Kennedy retired from Fairbairn, Kennedy and Naylor
c.1883 Alexander Sinclair Macpherson, who had been working for Fairbairn, Kennedy and Naylor for some years, was admitted into partnership. Macpherson was responsible for perfecting machinery used in the preparation and spinning of flax, hemp, jute, and similar fibres. The firm presumably became Fairbairn, Naylor, Macpherson and Co at this time.
1900 The Fairbairn, Lawson, Combe, Barbour company was registered on 11 July, to acquire the businesses of Fairbairn, Naylor, Macpherson and Co of Leeds, Samuel Lawson and Sons of Leeds and Combe, Baylour and Combe of Belfast, manufacturers of machinery for preparing and spinning flax, hemp and jute. 
Also see Fairbairn, Macpherson and Co