Nightbringer | The Arthurian Online Encyclopedia

Island that Floats

Ille Qui Flote

An island ruled by Queen Lingrenote, a sorceress. Her castle was called the Castle Without a Name.

Her lover, Guengasoain, was Gawain’s enemy.


Source
La Vengeance Raguidel | Raoul, possibly Raoul de Houdenc, early 13th century