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James Denny (1854-1934) of William Denny and Brothers
Second son of James Denny
Director of William Denny and Brothers
1871 Became a partner in the shipyard
1880s Married Catherine; they had at least 4 children 
1907 Became a partner in the Denny engine works
Responsible for the introduction of the Parsons steam turbine to merchant shipping
NB 1891 census indicates James was born c.1850.