A skeleton discovered on an archaeological dig may be that of an Irish Viking king, experts believe.
Archaeologists suggest they may have found the remains of Olaf Guthfrithsson, who was the King of Dublin and Northumbria from 934 to 941, or a member of his entourage.
The remains, which were excavated by AOC Archaeology Group at Auldhame in East Lothian in 2005, are those of a young adult male who was buried with a number of items indicating his high rank. These include a belt similar to others from Viking Age Ireland.
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Experts said this artefact signals the body was that of a man who may have spent time in the household of the kings of the Ui Imar dynasty which dominated both sides of the Irish Sea from about 917 until at least the middle of the 10th century.
As there are no known living descendants, DNA analysis cannot be carried out to confirm the identity of the body, leaving archaeologists and historians to rely on circumstantial evidence to reach their hypothesis.
Dr Alex Woolf, senior lecturer in the School of History at the University of St Andrews and a historical consultant on the project, said: "Whilst there is no way to prove the identity of the young man buried at Auldhame, the date of the burial and the equipment make it very likely that this death was connected with Olaf's attack on the locale.
"Since we have a single furnished burial in what was probably perceived as St Balthere's original foundation, there is a strong likelihood that the king's followers hoped that by burying him in the saint's cemetery he might have benefited from some sort of post-mortem penance."
Olaf Guthfrithsson was a member of the Ui Imar dynasty. In 937 he defeated his Norse rivals in Limerick and pursued his family claim to the throne of York. He married the daughter of King Constantine II of Scotland and allied himself with Owen I of Strathclyde.
He sacked Auldhame and nearby Tyninghame - both part of a complex of East Lothian churches dedicated to the eighth-century Saint Balthere - shortly before his death in 941.
The proximity of the burial to the site of the conflict along with the high-status items found with the body, and the age of the skeleton, has led archaeologists and historians to speculate that it may be that of the young Irish king or one of his followers.
The hypothesis - which will be published next year by the Society of Antiquaries of Scotland in a book funded by Historic Scotland - was revealed as Fiona Hyslop, the Scottish Culture Secretary, today visited Newgrange, a Neolithic monument in County Meath, to highlight archaeological links between Scotland and Ireland.
She said: "This is a fascinating discovery and it's tantalising that there has been the suggestion that this might be the body of a 10th century Irish Viking king.
"Scotland and Ireland's archaeological communities enjoy a close working partnership, and this find and subsequent research is of particular interest to both, further emphasising the myriad ways in which the two countries' histories are entwined."
A seminar will take place at Edinburgh Castle on October 30 to look at archaeological collaboration between Scotland, Northern Ireland and the Republic of Ireland.