This is Robert The Bruce who was a Scottish Warrior who spent a lot of time giving the English a good spanking. But, what is more remarkable (and a little gory) is that happened to him when he died. From Wikipedia:
Robert I died in June 1329 and was succeeded by his son, David II. Robert’s body is buried in Dunfermline Abbey, while his heart was interred in Melrose Abbey, and his internal organs embalmed and placed in St Serf’s Church, Dumbarton.
The full Wikipedia page for Robert here.