The love story of Philip and Elizabeth, who are distant cousins, began in 1939 when the young princess was just 13-years-old.
The couple met during a royal visit to his naval college in Dartmouth, it was love at first sight and they started to write to each other.
Philip was invited to spend Christmas 1943 with the royal family at Windsor Castle and by the end of the war newspapers were speculating about romance.
Dashing, blond-haired, athletic 18-year-old Philip is said to have caught her eye as he entertained her by jumping over tennis nets.
The king’s official biographer, Sir John Wheeler-Bennett, recalled: “This was the man with whom Princess Elizabeth had been in love from their first meeting.”
The dashing young Greek prince and the 21-year-old Princess Elizabeth walked down the aisle of Westminster Abbey on November 20 1947.
The young couple welcomed the birth of Prince Charles in 1948 and Princess Anne in 1950.
On their golden wedding anniversary in 1997, the Queen said: “He has, quite simply, been my strength and stay all these years.”