Duncan Campbell Bain was born in Partick, Lanarkshire, Scotland in 1887, the son of William and Maggie Bain. The family home in 1915 was at 8 Byres Road, Partick, Lanarkshire.
Cunard records show that he engaged on 30 April 1915 at New York, on board the
Lusitania as a waiter in the Steward's Department, for her final voyage home, at a monthly rate of £4.5s.0d, (£4.25). It proved to be an unlucky choice for him as he was killed just one week later, when the liner was sunk. He was aged 28 years.
As his body was not found and identified afterwards, he is commemorated on the Mercantile Marine War Memorial at Tower Hill, London.
Although the records of the Commonwealth War Graves Commission state that he was a fireman, a crew list published by Cunard in March 1916 gives his rank as that of waiter. This authority is more likely to be correct.
1891 Census of Scotland, 1901 Census of Scotland, Commonwealth War Graves Commission, Cunard Records, PRO BT 334, UniLiv D92/6/1.