Madelans, Medalan, Medalanz, Medelanc, Medelane, Medelanz, Medelaus, Medlan
Apparently either a leader of the Sesnes or a king allied with them, invovled in the attack on Vandaliors Castle early in Arthur’s reign.
He was killed by Gawain in a skirmish near the city of Vambieres.
See also
Maldalet | The Legend of King Arthur
Sources
Vulgate Merlin | 1220-1235
Arthour and Merlin | Late 13th century