Marie Christine Chilver was born in London but raised in Riga, the paper said in a feature titled 'Revealed: identity of Fifi the stunning wartime spy'.
Marie was employed at the age of 22 by the Special Operations Executive, the forerunner of today's MI6 secret service, as an 'agent provocatrice' using her stunning looks to try and pry secrets from unwitting newly-trained secret agents.
If they could resist her allure, they stood a good chance of resisting other 'honey traps' in which good-looking enemy agents would pry on their vanity - or over-active libido - in order to reveal secrets.
After studying at a German school in pre-war Riga (her mother was Latvian), Chilver attended the Sorbonne before joining the SOE in 1942.
After the end of the war she lived quietly in the small town of Lydney in the west of England.
"Chilver did not forget her Latvian roots and in 2001 set up an animal shelter in Riga. Staff there were amazed to hear of her wartime past," the Telegraph said.
You can read more about 'Fifi' and her amazing life here.