(Source: La Bataille Loquifer)
Fan Translation:
Renoart was greeted, the fairies gently disarmed him, and then they held him in a palace. King Arthur rose up [towards] him; they greatly honored him, and then they washed him, and the men had their meal prepared; they were well served, richly furnished. When they had eaten, tables were set up; Renoart called King Arthur; he asked him many questions. And Artus said: "I will tell you. I am Artus, of whom so much has been said. Renoart, friend, these are the fairies of this century, past and present. Here is Roland, [in vermillion]; This is Gavain, [in] pale red; and that is Yvain, his close friend; that is Percival who is beside him; and that is my wife [below] this branched pine; and that beautiful one, with the colored face, is Morgain, who has so much goodness." [Renoart said, as he listened]: "I would gladly, by holy charity, have him right beside me!" Artus heard him, and laughed. "Renoart, friend, do you know me?" Renoart [said] : "Yes, sir, oh God!"
Thanks to @wandrenowle, I was able to get an online source for something i've wanted access to for a long time: the chanson La Bataille Loquifer of the William d'Orange cycle. Specifically, the part of the chanson where the hero, Renoart, is brought to Avalon by Morgan le Fay and meets with King Arthur, centuries after Camelot's days. (Which i've posted about before HERE)
My access is still a limited viewing but I'm able to see the specific page where Arthur introduces himself and and other characters of his mythos. Plus Roland. They include Gawain, Ywain, Percival and Arthur's wife (presumably Guinevere), where they now live blissful (after)lives in the company of fairies.
It's outside the main body of Arthuriana but we have a literary precedent that Arthur has company in fairyland (outside of Morgan) and are probably gonna join him when he returns to Britain's salvation.