Unfortunately, the end is less glorious. After the defeat of Gaul, Caesar captured Vencringetorix (who was not his name, but his title, literally "head of the hundred heads") and reduced his army to slash.
He was imprisoned for 7 years after the Gallic war and seen presented to the crowd during the celebration of Caesar's victories.
This Roman piece struck by the Romans is the only image left to us. One sees an eminent man who looks 50 when he is only thirty. He died decapitated or suffocated not exactly.