Plenorius

Sirs Plaine de Force, Plaine de Amours, Pillounes, Pellogris, and Pellandris - kept a castle at the border of Surluse.

They took La Cote Maile Taile and King Carados of Scotland, among others, prisoner. Lancelot defeated them and rescued their prisoners, but refused to take their castle and lands.

Plenorius became a champion of the Round Table on the same Pentecost as La Cote Male Taile,

and Sir Plenorius' brethren were ever knights of King Arthur.

Plaine de Force also made it to the Round Table.

Eventually Plenorius followed Lancelot into exile and was made Earl of Foise (Foix), but Malory seems not to tell us what happened to the other brothers.