The foster-parent of Mordred.
Mordred, as an infant, washed up on Nabur’s island after the ship on which he had been set adrift, by Arthur, was wrecked. A fisherman found the child and brought him to Nabur for rearing.
Nabur was also the natural father of Sir Sagremor (Sagramore).
Source
Post-Vulgate Suite du Merlin | 1230-1240