Admiral Sir John Hereward Edelsten GCB GCVO CBE (12 May 1891 – 10 February 1966) was a senior Royal Navy officer who went on to be Commander-in-Chief, Portsmouth.

[5] He also served in World War II initially as Senior Naval Officer during operations against Italian Somaliland before becoming chief of staff to the Commander-in-Chief, Mediterranean Station in 1941.

[5] He was made Assistant Chief of the Naval Staff (U-boat Warfare and Trade) in 1942 and Rear Admiral (Destroyers) for the British Pacific Fleet in 1945.

[6] On 14 December 1926, Edelsten married Frances Anne Hoile Masefield at the Holy Trinity Church in London.

[7] Frances was born 14 October 1900 in Broughty Ferry, Forfarshire, Scotland to Henry Valentine Masefield and Caroline Gordon.