The legend of brave Gelert.

In this legend, Llywelyn returns from a hunt to find the room of his son upside down, without the child and the dog with the muzzle stained with blood. Beliving that the dog had devoured his son, Llywelyn affects Gelert with his sword and kills him. They feel than means coming soon from a pile of blankets in a corner of the room, so Llywelyn finds out his son unharmed next to death wolf. Which had to attack the child and be killed by Gelert. Llywelyn is overwhelmed by remorse and buries the dog with a solemn ceremony.