Some Borders scientists reckon some new DNA results shed light on the Royal Family Tree.
BritainsDNA is a company based in Melrose - they claim to have discovered a direct genetic link between Prince William and a part-Indian ancestor.
Working with the University of Edinburgh to analyse saliva samples from the Duke's relatives, they claim to have discovered a link between the future king and a woman who was the housekeeper of one of his ancestors, in the 18th century, who worked for the East India Company.
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The historic event always takes place on the last Friday in July.
Early enquiries suggest the men may have taken the drug Blue Valium. Two of them remain in hospital with breathing problems.
More than 8,000 people are expected to attend over the three day event, which starts at 7pm tonight.