The tyrannical king of Genewis, named in Ulrich von Zatzikhoven’s Lanzelet as Lancelot’s father. He was overthrown and killed by his own nobles during a rebellion.
Pant is manifestly a corruption of Ban, the name traditionally given to Lancelot’s father.
Notes
Pant means a low place, a hollow, in Welsh, similar to a glen.
Source
Lanzelet | Ulrich von Zatzikhoven, c. 1200