The last Prince of Wales

Here's the monument for Prince Llywellyn the last Prince of Wales at Cilmeri near Builth Wells.
A little bit of wiki about him.
Llywelyn ap Gruffudd (c. 1223 – 11 December 1282), was Prince of Wales from 1258, until his death at Cilmeri, in 1282.
He was the last sovereign prince of Wales before its conquest by Edward I of England.
Llywelyn and a small group of his retainers (which included clergy), were ambushed and chased into a wood at Aberedw.
Llywelyn was surrounded and struck down.
As he lay dying, he asked for a priest and gave away his identity. He was then killed and his head hewn from his body.
His head was sent to Edward at Rhuddlan and after being shown to the English troops based in Anglesey, Edward sent the head on to London.
In London, it was set up in the city pillory for a day, and crowned with ivy (i.e. to show he was a "king" of Outlaws and in mockery of the ancient Welsh prophecy, which said that a Welshman would be crowned in London as king of the whole of Britain). Then it was carried by a horseman on the point of his lance to the Tower of London and set up over the gate. It was still on the Tower of London 15 years later.[4]