It'll be six years next month that HRH Princess Margaret passed away at the age of 71. Apparently her ex-husband, Lord Snowdon has decided to share intimate details of his marriage to the late Princess in a new biography. According to Hello Magazine: "News of the book, which is set to hit UK stores in the summer, may come as a surprise to many royal watchers. "There has always been an understanding that no biography would be published during his lifetime," says royal author Tim Heald - who wrote a biography of the Queen's late sister. "He has never spoken a word in public about Margaret," he continues, "He has remained very loyal to her and to her memory." "However, the royal snapper, who married the beautiful, blue-eyed royal at Westminster Abbey in 1960, has given his "full agreement" to the new biography by well-known journalist Anne de Courcy. "I am now happy for people to know about my life and I want to put the record