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1813 Joseph Clement was engaged by Alexander Galloway. Clement was first employed on a lathe and made himself a new set of tools as the ones he had been given were unsatisfactory. Soon after he moved to work for Bramah at Pimlico who better appreciated his skills.
Clement felt that Galloway, although one of the leading tradesmen of his time, missed many opportunities as he had others ambitions than engineering, and rarely supervised his workshops, leaving this to his foremen. Poor engineering judgement was apparent in his design of a cast iron roof for the workshop which collapsed, killing several workmen.
Mid-1820s, Galloways were one of London's largest employers
1826 Galloways (of West Smithfield) were engaged to supply machinery for six vessels to serve the Greeks in their revolution. The work was not completed on time and the workmanship was allegedly of a very poor quality .
1827 John Galloway wrote to The Morning Chronicle to defend the achievements of the steam vessel Enterprize to which Galloways had fitted steam engines, the boiler having failed some miles short of the destination.
1838 Reference to the late Alexander Galloway - this would seem to be the brother of John and hence son of Alexander Galloway senior.
1847 November 20th. Alexander Galloway, of West Street, Smithfield, died at Claremont Terrace 
1850 John Galloway died in June
1852 Galloway and Son, engineers, were at West St., Smithfield; also the address of Galloway and Brothers, merchants.