However, the second image, below, reveals that strength co-existed with frailty. The skull exhibits likely signs of leprosy, disfiguring the upper jaw and nose.
Historians believe Bruce suffered from an unidentified ailment, possibly leprosy, which laid him low several times during his reign, and probably killed him. In Ulster in 1327, he was said to be so weak that he could only move his tongue.
The project to put a face to the Hunterian skull was led by Dr Martin MacGregor, a senior lecturer in Scottish history at the University of Glasgow. Dr MacGregor was inspired by the discovery of the skeleton of King Richard III of England beneath a car park in Leicester in 2012.
Dr MacGregor said: “I was aware of previous attempts to recreate the face of the skull linked to Robert the Bruce. The case of Richard III revealed how far the technology had advanced. I saw an opportunity to apply the technology to the Hunterian skull held here at Glasgow: first to test the credibility of its connection to Bruce, and then to try to add to our knowledge of Scotland’s greatest king.”
Dr MacGregor requested the expertise of Professor Caroline Wilkinson, Director of LJMU’s Face Lab and a world-renowned craniofacial identification expert
, to carry out the facial reconstruction of Robert the Bruce. Professor Wilkinson was also responsible for the facial reconstruction of Richard III.
Professor Wilkinson said: “Using the skull cast, we could accurately establish the muscle formation from the positions of the skull bones to determine the shape and structure of the face. But what the reconstruction cannot show is the colour of his eyes, his skin tones and the colour of his hair.
"We produced two versions – one without leprosy and one with a mild representation of leprosy. He may have had leprosy, but if he did it is likely that it did not manifest strongly on his face, as this is not documented.”
Solving the mystery of the Bruce skull
No reliable visual depictions of Robert the Bruce were made in his own time, and written records tell us nothing about his appearance. DNA would offer another way to establish hair and eye colour – but there is a problem, as Dr MacGregor explains: “The skull was excavated in 1818-19 from a grave in Dunfermline Abbey, mausoleum of Scotland’s medieval monarchs. After the excavation, the original skeleton and skull were sealed in pitch and reburied, but not before a cast of the head was taken. Several copies of the cast exist, including the one now in The Hunterian, but without the original bone we have no DNA.”
“The Hunterian also holds a piece of toe-bone said to have come from the same grave, and not returned to it. We had hoped to try and obtain DNA from this and test it against a living descendant of Robert the Bruce, but the bone would probably have been destroyed in the process.”
Professor Wilkinson added: “In the absence of any DNA, we relied on statistical evaluation of the probability of certain hair and eye colours, conducted by Dr MacGregor and his team, to determine that Robert the Bruce most likely had brown hair and light brown eyes.”
“There have also been a number of advances in facial reconstruction techniques since previous depictions of this Scottish hero, including better facial feature prediction and more advanced CGI.”
“This is the most realistic appearance of Robert the Bruce to-date, based on all the skeletal and historical material available.”
Images copyright University of Glasgow.