Background
Loehnis was born in 1902 in Chelsea, London. His father, Herman Loehnis, was born in New York, but had become a naturalised British citizen and became a barrister.
Loehnis was born in 1902 in Chelsea, London. His father, Herman Loehnis, was born in New York, but had become a naturalised British citizen and became a barrister.
Clive Loehnis attended Lockers Park School and then joined the Royal Navy, graduating from the Royal Naval College, Osbourne, the Britannia Royal Naval College in Dartmouth, and the Royal Naval College, Greenwich.
He became qualified in signals in 1928 and left the Navy in 1935. In 1938 he returned to the Signals Division of the Admiralty, where he earned the silver oak leaves of a commander before retiring in 1942 and going into the Naval Intelligence Division. When he was demobilised after the war, he joined GCHQ, at that time a semi-covert division of the Foreign Office.
Loehnis was appointed deputy to Sir Eric Jones in 1954.
When Jones retired in 1960, Loehis was promoted to the directorship, which he held until 1964. He was knighted in 1962.
After leaving GCHQ Loehnis retired to Belgravia, where he died in May 1992.