John Henry Gregory was born in Camberwell, London in 1894, the son of John Henry and Florence Mary Gregory. The family home was at 54 Tilson Road, Peckham, London.
He was a professional merchant seaman and was engaged as a trimmer in the Engineering Department on board the
Lusitania at New York on 30 April 1915, just in time for her fateful voyage home. His monthly rate of pay was £6.
He was killed when the ship was sunk and his body was not recovered and identified later. As a consequence, he is commemorated on the Mercantile Marine Memorial at Tower Hill, London.
Commonwealth War Graves Commission records show his rank as fireman, but several Cunard sources show it to have been that of trimmer.
Register of Births, Marriages and Deaths, 1901 Census of England and Wales, 1911 Census of England and Wales, Commonwealth War Graves Commission, Cunard Records, UniLiv. D92/6/1, PRO BT 334.