James Charles Bond died in 1995 and kept the secret of his past to grave.
His grandson, Stephen Phillips, found out that he was a member of the elite Special Operations Executive (SOE) after searching through WW2 documents years following his death.
Bond worked under Ian Fleming, who served as Naval Commander before the became a writer of James Bond novels.
Mr. Phillips believed that Fleming used his grandpa's name for his fictional agent and had the code carved on the headstone.
"Seeing the headstone standing proud recognising grandad's '007' status and proper birth name has been so important to our family."
Find out more on BBC News.
(Image Credit: Wales News Service)