The Duke of Cambridge has proven Indian ancestry, according to new DNA analysis.
Scientists testing saliva samples from Prince William's relatives discovered a direct link between the future king and a woman who was part-Indian.
The research shows that the second in line to the throne carries a rare form of mitochondrial DNA (mtDNA) from his great-great-great-great-great grandmother. Mitochondrial DNA is a small piece of DNA inherited mostly unchanged from a mother to her children.
The mtDNA was passed on through daughters and granddaughters directly in an unbroken line to Princess Diana, then on to Prince William and Prince Harry.
Scientists said it is "very likely" that Prince William's heirs will also carry a small proportion of Indian DNA from Eliza, whose father may have been of Armenian descent.
Arabella Brett and Sive Laurie, who were both born in 2004 helped Festival Directors Alistair Moffat, Frances Hamilton and Paula Ogilive celebrate the programme launch of the 10th Brewin Dolphin Borders Book Festival.
The Borders Book Festival will feature a host of big names from the world of fiction including Alexander McCall Smith, Kate Mosse, A.N. Wilson, Simon Scarrow and Dame Stella Rimington.
In non-fiction, historian and presenter Neil Oliver will speak about the Vikings, one of the ‘NatWest Three’ Gary Mulgrew will talk about his account of imprisonment for alleged banking offences, and Richard Holloway and scientist Frank Close talk about the relationship between science and faith.
"Every year the festival goes from strength to strength and we, as lead sponsors, are immensely proud to be involved.
"When you look back over the last decade, the quality, range and diversity and of the authors who grace the marquees is truly remarkable. And so we look forward to this year’s jam-packed programme of activity.
"We are privileged to have such a wonderful festival in the heart of Melrose."
– Jonathan Tweedie, Divisional Director, Brewin Dolphin
The children’s programme has also attracted some big names with Lauren Child and Francesca Simon scheduled to about their new books.
The winner of the fourth £25,000 Walter Scott Prize for Historical Fiction will also be announced at the festival
"In ten years, we have moved from the Wynd to the National Trust for Scotland’s Harmony Garden, the 220 who attended in 2004 has mushroomed into 13,000 in 2012, and the event has become a vital driver for the tourist economy.
"Our sponsors help us make it happen. But it is the authors who have made it sing.
"We couldn’t have hoped for a more diverse, starry and topical cast of stars to help us celebrate the ten years, than those in this year’s programme."
The tenth Borders book festival is being launched in Melrose in the Scottish Borders.
Three local children will cut a special birthday cake to mark the launch of the 'Brewin Dolphin' festival, which will be held in the middle of June.
A number of well known literary people expected to attend the event will also be announced at the launch.
"In ten years, we have moved from the Wynd to the National Trust for Scotland's Harmony Garden, the 220 who attended in 2004 has mushroomed into 13,000 in 2012, and the event has become a vital driver for the tourist economy.
"Our sponsors help us make it happen. But it is the authors who have made it sing. We couldn't have hoped for a more diverse, starry and topical cast of stars to help us celebrate the ten years, than those in this year's programme."