The ads/campaigns that David Ogilvy is most famous for were created when he was in his forties and fifties. (Advertising agencies today don't like to hear this.)
Here is an entertaining (and revealing) speech given by Kenneth Roman last year about David Ogilvy. An excerpt:
When he began to make his mark on Madison Avenue, Fortune described him. “At fifty-three, Ogilvy is a remarkable young-looking man, with wavy, dark-blond hair (cut rather long), blue eyes, and a fair complexion, who might easily be mistaken for a successful British actor. He smokes a pipe, his speech is that of an English gentleman, and he wears tweed to the office, where he is served tea every afternoon by a maid named Bridey Murphy. His vests have lapels.”Mr. Roman is the former chairman and chief executive officer of Ogilvy & Mather Worldwide - and was also a guest on The Advertising Show.