One of the twelve sons of Bron and nephew of Joseph of Arimathea in the Prose Tristan. He was an ancestor of Tristan.
He married a Babylonian princess named Chelinde and fathered Apollo. His brother Naburzadan tried to rape his bride, and Sador killed Naburzadan.
Chelinde came to believe that Sador was dead and re-married. Sador was eventually re-united with his wife, but was killed by his own son, Apollo, who did not know him.
See also
Babylon | The Legend of King Arthur
Pelias | The Legend of King Arthur
Source
Prose Tristan | 1230-1240