St John Tyrwhitt

Admiral Sir St John Reginald Joseph Tyrwhitt, 2nd Baronet KCB DSO DSC (18 April 1905 – 10 October 1961) was a senior Royal Navy officer who went on to be Second Sea Lord and Chief of Naval Personnel.

Naval career
Tyrwhitt joined the Royal Navy in 1919. He served in World War II as Commanding Officer of the destroyer HMS Defender from 1939 and then as Commander of the destroyer HMS Juno from 1940 until it was sunk by Italian bombers 30 nautical miles off Crete in 1941. He was given command of the destroyer HMS Tartar from 1942.

After inheriting his father's baronetcy in 1951, he assumed command of the cruiser HMS Newcastle during the Korean War then became Flag Officer (Flotillas) to the Indian Navy in 1956, Chief of Staff to the Commander-in-Chief of the Mediterranean Fleet in 1958 and Second Sea Lord and Chief of Naval Personnel in 1959. He died in office in 1961, aged 56.

Family
In 1944 he married Nancy Veronica Gilbey.