The pressures of power drove King Richard III to drink, according to new evidence uncovered in a documentary about the medieval monarch.
Researchers who carried out tests on his skeleton after it was unearthed from a council car park in Leicester in 2012, were able to reveal details about his diet and even where he lived at different parts of his life.
The team, whose work was filmed for a new Channel 4 documentary about the doomed king, analysed his bones and teeth.
The research showed his drinking habits changed significantly around the time he became king in 1483 and that during the last three years of his life he consumed about a bottle of wine a day.
His diet also changed at the same time and included exotic meat including swan, crane, heron and egret.
Dr Angela Lamb, isotope geochemist and lead author of the paper, said: "The chemistry of Richard III's teeth and bones reveals fascinating changes in his geographical movements, diet and social status throughout his life."
The study by the British Geological Survey, in association with researchers at the University of Leicester, is published in the Journal of Archaeological Science.