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John Hunter (c1846-1911) of Messrs. Campbells and Hunter, Dolphin Foundry, Saynor Road, Hunslet, Leeds.
c1863 Apprenticed at J. and G. Thomson, Glasgow
c1873 Formed Campbells and Hunter
1881 Lodger at 8 Grove Terrace, Leeds: John Hunter (age 35 born Scotland), Engineer Master employing 70 men and 6 boys - Unmarried. 
1886 Joined IMechE
Married Maria Bissington
1901 Living at Woodlands, Weetwood Lane, Leeds: John Hunter (age 55 born Scotland), Mechanical Engineer and Employer. With his wife Maria Hunter (age 60 born Leeds). Also a visitor. Two servants.
1907 Death of his wife Maria.
1911 Died. Of Campbells and Hunter. Third son of John Campbell of Oxenford Mains.