Melbourne, June 14 : English photographer and Emmy award-winning documentary filmmaker Lord Snowdon fathered a secret love child just months before tying the knot with Princess Margaret, a new, semi-authorised biography of the royal has claimed.
In 'Snowdon: The Biography,' respected author Anne de Courcy claims that olly Fry, a member of the Fry's chocolate dynasty, is the illegitimate half-sister of Viscount Linley and Lady Sarah Chatto, the Queen's nephew and niece.
According to De Courcy, Fry has claimed that a DNA test proved she was Lord Snowdon's daughter.
Anthony Armstrong-Jones, as he was known before being granted the title Earl of Snowdon, was in the third week of his honeymoon when Polly Fry was born on May 28, 1960, the book claims.
She was reportedly delivered in the same four-poster bed in which Princess Margaret had slept during visits to the Frys' home.
Polly Fry, now Polly Higson, a married mother of five, is said to have become troubled by constant rumours that Snowdon - not Jeremy Fry - was her biological father.
"When you reach a certain stage in your life, you just want to know," Courier Mail quoted her, as stating in the book.
Snowdon has not denied the revelation as yet. In the book, De Courcy also talks about the raucous parties attended by the royal couple where pornographic movies were shown and drug use was common.
Snowdon was said to have regularly carried a lump of hashish in his pocket and became a fan of the sex drug amyl nitrate.
"(It was) so effective that Tony eventually kept a bottle of the liquid in the Kensington Palace fridge," de Courcy writes. Snowdon married Princess Margaret in 1960 and the pair divorced in 1978.