The Fife base is close to St Andrews, where William and Catherine first met as students.
Royal historian Robert Lacey has looked at the prevalence of twins in both William and Catherine's families.
Behind them the ever-popular William and Catherine have now progressed to being senior members of the royal family.
Lindi Fairweather and Sandy Benkenstein hugged as William and Catherine left the balcony.
Millions around the world watched him celebrate the marriage of Prince William and Catherine, Duchess of Cambridge, last April.
Prince William and Catherine's sister Pippa and brother James visited her in hospital.
William and Catherine were married at Westminster Abbey on April 29, 2011, in London's biggest royal wedding in three decades.
In a taped interview, Sarah Ferguson said she went to Thailand instead of attending Prince William and Catherine Middleton's wedding in London.
Distinguished guests of the royal nuptials included the newlywed Duke and Duchess of Cambridge, Prince William and Catherine Middleton, and Prince Harry.
William and Catherine's child will be next in line to the British throne after William, regardless of whether it is a boy or a girl.
Earlier this month, it was announced that Prince William and Catherine were expecting their first child, after the duchess was admitted to hospital with acute morning sickness.
Prince William and Catherine's child will be next in line to the throne after William regardless of whether it is a boy or a girl, the British Cabinet Office said Monday.
William and Catherine, who are known as the Earl and Countess of Strathearn in Scotland, were due to travel to Barrow-in-Furness, Cumbria, to learn about the new Astute Class of nuclear powered submarines being built for the Royal Navy by BAE Systems.
And it comes after William and his new wife, Catherine, the Duchess of Cambridge, were met with huge and enthusiastic crowds during their visit last year to the United States and Canada.
However, Prince William and his wife, Catherine, who's expecting their first child, will not attend the funeral, nor will Prince Harry, Prince Charles or his wife, Camilla, Buckingham Palace said.
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Amid measured pomp and pageantry, Prince William married longtime girlfriend Catherine Middleton this morning in one of the largest and most watched events of the decade.
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Catherine and William, who are both 30, were married at Westminster Abbey in April 2011.
Catherine and William first met at St Andrews and they both graduated in 2005 with a 2:1.
BBC: William and Kate recall St Andrews University courtship
James's Palace -- which represents Catherine, her husband, Prince William, and his brother, Harry -- responded with dismay Tuesday to news that the photos would be released.
Visitors will have the opportunity to pose with an 85-carat diamond tiara (pictured above) designed by Reena Ahluwalia, a Toronto-based jewelry designer, for the Royal Wedding of Catherine Middleton, now Duchess of Cambridge, and Prince William.
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