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John Alexander Galloway (c1804-1850) of Galloways of Holborn
1839 John Alexander Galloway of West Smithfield, became a member of the Institution of Civil Engineers.
1841 Living in St Sepulchre without Newgate, Mddx (age 35), an Engineer. With George W. Galloway (age 30), an Engineer; Thomas Canning (age 25); William Brown (age 25); and William Benjamin (age 20). 
1851 Obituary 
Mr. John Alexander Galloway was the son of the well known Engineer, Alexander Galloway, in whose works he received his mechanical tuition, and where he eventually designed and constructed some good machines.
For some years he took a very active part in the direction of those works, practising, at the same time, as a consulting Civil and Mechanical Engineer, in which latter capacity, he visited Egypt, in 1845, for the purpose of carrying into effect some plans projected by his late brother, Galloway Bey , particularly the railway across the Desert, between Cairo and Suez. Political events, however, prevented the accomplishment of this desirable work, and after completing, by order of H. H. Mahomed Ali Pacha, by whom he had been invited to Egypt, several works, left unfinished at the decease of his brother, he returned to England, with satisfactory tokens of the Pacha’s approbation for his labours.
The results of his observations in Egypt were communicated to the world, in a pamphlet, entitled 'Observations on the Overland Communication with India', demonstrating the greater advantages offered by a railway across the Desert, from Suez, than by the canal, proposed by the French Engineers for the same locality.
He became a Member of the Institution in the year 1839, and was a frequent attendant at the meetings; his delicate health did not however, permit him to take so active a part, as his love for his profession urged him to do.
His scientific and practical attainments caused his opinion to be much sought after, in quarters where he was known, and his decease, on the 16th of June, 1850, at the age of 46 years, was generally regretted