Three entries with the name Waste Chapel.
Waste Chapel
Gaste Capiele
The location of the tomb of Canaan, a follower of Joseph of Arimathea who slew his twelve brothers. The brothers were all buried with their swords on their tombs. After the burial, the swords unexpectedly stood upright and Canaan’s tomb became engulfed in flames.
Gawain and Hector visited the Chapel, but were driven back by the swords. It was Lancelot’s noble presence that finally caused the fire to be extinguished.
Source
Vulgate Lancelot | 1215-1230
Waste Chapel
Gaste Capiele
A perilous chapel near the city of Cardigan. It was surrounded by all kinds of supernatural perils, beasts, and brambles.
King Ris of Outre-Ombre, an enemy of Arthur, braved the chapel and left a cloth on the altar. Later, he offered to grant any favor to the knight who would brave the Waste Chapel by taking a pair of shackles (intended for Arthur when Ris conquered him) to the altar. None of Ris’s knights would brave the chapel, but Lady Lore of Cardigan, whose city Ris had conquered, saw a chance to reclaim her sovereignty.
She took the shackles to the chapel. Lore saw two dark men in flames tossing around a decapitated head on the way. When she got to the chapel, she was followed by a knight who buried the body of the slain Bleheri, who turned out to be the father of Meriadeuc, the knight Lore eventually married. Lore took a sword from Bleheri’s body and later gave it to Meriadeuc. Meriadeuc eventually visited the Waste Chapel and paid homage to his father’s body.
See also
Perilous Cemetery | The Legend of King Arthur
Source
Meriadeuc or Le Chevalier aux Deux Épées | c. 1225-1250
Waste Chapel
Perilous Chapel
Another name for the Perilous Chapel in the Perilous Cemetery in Perlesvaus. It shares many characteristics with the Waste Chapel of Meriadeuc.
Source
Perlesvaus | Early 13th century