| Aballach | Father of Modron. |
| Accalon | Lover of Morgan le Fay. |
| Acheflow | White flower. |
| Ade | A mistress of Lancelot. |
| Aglaral | Brother of Percival. |
| Aglarale | Brother of Percival. |
| Aglaval | Brother of Percival. |
| Agravain | Brother of Gawain. |
| Alain | From Alain le Gros one of the Fisher kings. |
| Albion | Britain. |
| Albiona | White. |
| Alexandre | Nephew of King Mark. |
| Aleyn | A Fisher king. |
| Alis | Brother of Cliges. |
| Alixandre | Nephew of King Mark. |
| Amr | Son of Arthur. |
| Andret | King Mark’s nephew. |
| Angharad | A love of Peredur. |
| Angharat | A love of Peredur. |
| Anglides | Mother of Alexandre. |
| Anguysh | Father of Isolde. |
| Anir | Son of Arthur. |
| Anna | Arthur’s sister. |
| Antfortas | Keeper of the grail. |
| Antor | Foster father of Arthur. |
| Apollo | Uncle of Tristan. |
| Argante | Name of a queen. |
| Arthgallo | High honor. |
| Arthur | Noble; courageous. Legendary sixth century King Arthur of Britain and his Round Table of knights. |
| Astolat | Lady of Shalott who kills herself for the love of Lancelot. |
| Auctor | Foster father of Arthur. |
| Augwys | Brother of Lot. |
| Avalloc | Father of Modron. |
| Avalon | Arthur’s burial place. |
| Avaron | Arthur’s burial place. |
| Avarona | Arthur’s burial place. |
| Avilon | Arthur’s burial place. |
| Awarnach | A giant. |
| Bagdemagus | Father of Meleagant. |
| Baldulf | A knight. |
| Balen | Brother of Balaan. |
| Balin | Brother of Balaan. |
| Ban | Father of Lancelot. |
| Beaumains | White hands. |
| Bedegrayne | Name of a castle. |
| Bedivere | Returns Excalibur to the Lady of the Lake. |
| Bedver | Returns Excalibur to the Lady of the Lake. |
| Bedwyr | Returns Excalibur to the Lady of the Lake. |
| Belakane | An African queen. |
| Bellangere | Son of Alexandre. |