Passabrunello, Passe-Brewel, Passe-Bruell
Tristan’s horse. It enabled Tristan’s friends to recognize him when he was otherwise in disguise.
In La Tavola Ritonda, it is killed during Tristan’s battle with a giant named Urgan the Hairy.
Sources
La Tavola Ritonda | 1325–1350
Prose Tristan | 1230-1240
Le Morte Darthur | Sir Thomas Malory, 1469-1470