Gronois
Kay the Seneschal’s son, according to Chrétien de Troyes, who calls Gronosis “well versed in evil”, yet lists him among Arthur’s knights.
Sources
Erec | Chrétien de Troyes, late 12th century
Diu Crône | Heinrich von dem Türlin, c. 1230
Nightbringer | The Arthurian Online Encyclopedia
Kay the Seneschal’s son, according to Chrétien de Troyes, who calls Gronosis “well versed in evil”, yet lists him among Arthur’s knights.
Sources
Erec | Chrétien de Troyes, late 12th century
Diu Crône | Heinrich von dem Türlin, c. 1230