Henry de Bohun
Sir Henry de Bohun was an English knight, the grandson of Humphrey de Bohun, 2nd Earl of Hereford. He was killed on the first day of the Battle of Bannockburn by Robert the Bruce.
Riding in the vanguard of heavy cavalry, de Bohun caught sight of the Scottish king who was mounted on a small palfrey armed only with a battle-axe. De Bohun lowered his lance and charged, but Bruce stood his ground. At the last moment Bruce manoeuvred his mount nimbly to one side, stood up in his stirrups and hit de Bohun so hard with his axe that he split his helmet and head in two. Despite the great risk the King had taken, he merely expressed regret that he had broken the shaft of his favourite axe.
An iconic description and picture of the death of Henry de Bohun is contained in Scotland's Story by H. E. Marshall.