Two entries with the name Landoine.
Landoine
Landoigne
The daughter of the King with a Hundred Knights.
Near Penning, Landoine and her brother, Maranz, were saved from a pack of ruffians by Sir Bors.
Source
Vulgate Estoire del Saint Graal | 1220-1235
Landoine
Lancoine, Lancone, Landoigne, Landoines
A nobleman in the service of King Agrestes, who ruled Camelot in the time of Joseph of Arimathea.
An evil man, Landoine helped Agrestes force the Christians in Camelot to revert to paganism.
Source
Vulgate Estoire del Saint Graal | 1220-1235