Abinors was a Duke of the Scottish borderlands, as well as some of the islands, during the time of King Uther Pendragon.

Abilas was one of four brothers. Those other brothers were Casibilant, Dion, and Dyonis. Together they joined a revolt.

Abelleus is a knight who appeared in the Post-Vulgate Suite du Merlin, and Le Morte d’Arthur by Thomas Malory.

Abessa is a character that shows up in Edmund Spenser’s the Faerie Queene. She is blind, deaf, and mute. Read more in this article.

Abeesse was an abbess (go figure) who is known for discovering Queen Elaine after she lost both her husband and son.

The Abbot of Glastonbury, along with St. Gildas, convinced Melwas to return Guinevere before Arthur could wipe out everyone.

Abbe was an abbot who explained and interpreted dreams from Bohort (also known as Bors).

Abastunagio was the son of Galehaut and ruled over the Castle Ferelois, where he held a tournament during the Quest for the Holy Grail.

Aban was a relative of Lancelot who eventually joined the Round Table so he could be more like his kin.

Abadan was a heathen knight who was killed by Sir Lucan, who was a Knight of the Round Table and also a butler to King Arthur.