The Lady of Camelot was a title bestowed on the King of Camelot's ward, wife or daughter. The only known Lady of Camelot would be Uther Pendragon's daughter, Morgana who was passed off as his ward for many years before it was revealed she was his daughter via an affair he had with Sir Gorlois' wife, Vivienne. Another use of this title may have been used for that of Guinevere, King Arthur's wife before and after they married before she was crowned Queen. This has not been stated but simply implied. It is also unknown if Arthur's mother, Ygraine took this title as well before becoming Uther's queen but it seems like she did not take this title because she was already a Lady at birth as she was born into a noble family known as the House of De Bois.
Known Ladies of Camelot
|Morgana Pendragon||Uther's secret daughter.||
(now self-exiled from Camelot)
|Guinevere Pendragon||Unknown if title was given to her temporarily before and after her marriage to Arthur and before being crowned as Camelot's Queen.||Alive (current Queen of Camelot)|
|Lady Percival||Unknown, probably born noble||Unknown, Alive in Series 1|