H.J. Dingby was born in Dunoon, Argyllshire in 1876. His home was at 60 Horatius Street, New York City, New York, U.S.A. It is probable because of his address, that he was a professional seaman who regularly sailed on the transatlantic route.
He engaged on the Lusitania as a waiter in the Stewards' Department at New York on 30 April 1915, at a monthly rate of pay of £4.5s.0d (£4.25). It proved to be an unlucky move for him, as he was killed just one week later when the ship was sunk. He was aged 39 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.
Cunard records show his surname as Dingley.
Commonwealth War Graves Commission, Cunard Records, UniLiv D92/6/1, PRO BT 334.