“Land of Marvels”
A land in which the Schastel Marveile (Castle of Marvels) was situated.
In Wolfram’s Parzival, Gawain braved an adventure at the castle and won the land for himself, an episode that Chrétien de Troyes places in Galloway. Der Pleier names Terre Marveile as Gawain’s castle in Logres.
Sources
Parzival | Wolfram von Eschenbach, 1200–1210
Garel von dem blühenden Tal | Der Pleier, 1240-1270