He is also the son of Tom a'Lincoln and Anglitora, grandson of King Arthur. He killed his mother after hearing from his father's ghost that she had killed him. He later joined the Faerie Knight, his half-brother, in adventures.
A black knight is also mentioned as being killed by Gareth when he was traveling to rescue Lyonesse.
In the novel Ivanhoe, one of the characters is an unknown black knight who fights alongside Ivanhoe in a tournament and helps assault Front-de-Boeuf's castle. He is later revealed to be King Richard I.
The Arthurian black knight has survived past its appearance in the medieval Arthurian romances. A giant knight, clad in black named Orgoglio (Pride) appears in The Faerie Queene by Edmund Spenser, whom Prince Arthur kills after first severing his arms and legs. Consequently, this black knight is part of a genre trope lampooned by the scene with the black knight in Monty Python and the Holy Grail. In Conquests of Camelot Black Knight of Glastonbury was a spirit that held Sir Gawain captive.