He was born in Polmont near Falkirk on 28 September 1844, the second son of Robert Dunlop (b.1819) a farmer, and his wife Mary Gibb.
[2] Around 1879 he left Fairfield and joined the Orient Line in London as Superintendent Engineer.
As John Brown had not previously undertaken shipbuilding, his presence was now critical, and as senior engineer he would have had a control over all ship design thereafter.
[6] In 1907 he was a controlling influence of the acquisition of a majority share in Harland and Wolff shipyard in Belfast.
In this capacity Dunlop acted as the enabler of "master-plans" by naval architects such as Leonard Peskett who worked for Cunard, bringing a design concept to reality.