Lazenby is the second official actor to portray the British secret agent, following Sean Connery, who had become a cultural icon in the role. Lazenby had a difficult task in filling these shoes, and nearly everything about his portrayal of Bond has been controversial.
Lazenby quit the role of Bond right before the premiere of On Her Majesty's Secret Service, citing he would get other acting roles, and that his Bond contract, which was one and a half pages thick, was too demanding on him.
During the "Moonraker" incident Bond indicates that he is 37. He says is 8 years away from retirement which is 45. The book was published in 1955. Assuming the book is contemporary, that would have Bond born no later than 1919.