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Margaret was already a fixture on London’s social and arts scene when she began secretly seeing photographer Antony Armstrong-Jones in 1958. The announcement of their engagement in February 1960 caught many by surprise. They were married on May 6, 1960, in the first royal wedding to be televised. (Armstrong-Jones was created earl of Snowdon in 1961.) The marriage was at first successful, and they had two children: David, Viscount Linley, born in 1961, and Lady Sarah, born in 1964. By the 1970s, however, the couple had grown apart. Both of the Snowdons engaged in public love affairs, and the princess scandalized conservative monarchists, cultivating friendships and romances among actors, writers, ballet dancers, and artists. She spent much of her time on the Caribbean island of Mustique, in the Grenadines. When her long-standing affair with Roddy Llewellyn, a landscape gardener 17 years her junior, was exposed in 1976, she lost public sympathy, and he