Henry Devlin was born in Liverpool, Lancashire, in 1875, the son of Peter and Elizabeth Devlin. On the 12 June 1906, he married Isabella McShane in Liverpool, and in 1915, they lived at 15 Dallas Grove, Aintree, Liverpool, Lancashire.
He served as a fireman in the Engineering Department on the Lusitania's last voyage and he did not survive her sinking. He was aged 40 years, although when he signed on for the voyage, he stated his age as being 38 years.
His body was never recovered and identified afterwards and as a consequence, he is commemorated on the Mercantile Marine Memorial at Tower Hill, London.
The balance of wages owing to him was later paid to his widow Isabella at Liverpool in respect of his sea service from 17 April to 8 May 1915, 24 hours after the liner had gone down.
The Liverpool and London War Risks Insurance Association Limited also granted a yearly pension to Isabella Devlin to compensate her for the loss of her husband which amounted to £55-2s-1d (£55.10½) which was payable at the rate of £4-11s-11d (£4.59½) per month.
1881 Census of England and Wales, 1891 Census of England and Wales, 1911 Census of England and Wales, Commonwealth War Graves Commission, Cunard Records, George Donnison, UniLiv. PR 13/24, PRO BT 334.