(Image: Imperial War Museum)

Ingleby Jefferson was born in Ripon, North Yorkshire on 7 January 1883, the son of Doctor William Dixon Jefferson and Mary Stuart Jefferson. He joined the Royal Navy as a Cadet at The Royal Naval College, Osbourne on the Isle of Wight.

Promoted Midshipman In May 1910, he was appointed to the Cruiser HMS DUKE OF EDINBURGH in May 1911. He was promoted to Sub Lieutenant on 15 August 1913 and, at the outbreak of the First World War, he was serving in the Battleship HMS ORION at Scapa Flow.

He took passage in HMS C28 and joined HMS C21 in November 1914. He was appointed to HMS A5 as First Lieutenant in May 1915 and later as First Lieutenant of E17 and then E43. In April 1917 he took command of HMS C34.

On 17 July 1917 C34 was on the surface to the East of Fair Isle, when she was torpedoed by the German submarine U-52. There was only one survivor.

Ingleby Jefferson is commemorated on the Portsmouth Naval War Memorial on Panel No 24. There is also a Memorial Plaque for him in the North wall of the Cathedral at Ripon in North Yorkshire.