The seneschal of King Clamide.
With Clamide, he invaded the land of Brobarz and besieged Belrepeire (Beaurepaire), castle of the lady Condwiramurs (Kondviramur). Clamide and Kingrun would have succeeded but for the arrival of Perceval, who defeated them both in combat.
Kingrun had killed Schenteflurs, the son of Gornemant, and for this reason he refused when Perceval ordered him to report to Gornemant. Rather than kill Kingrun, Perceval sent him to King Arthur instead.
Kingrun’s counterpart in Chrétien de Troyes is Anguiguerron.
See also
Clamadeu of the Isles | The Legend of King Arthur
Source
Parzival | Wolfram von Eschenbach, 1200–1210