This man follows a bloody black dog to the crumbling manor of Sir  Gylbert the Bastard, only to find he was slain by Sir Meliot de Logres.  
This man follows a bloody black dog to the crumbling manor of Sir  Gylbert the Bastard, only to find he was slain by Sir Meliot de Logres.  Thomas Mallory tells his story right after that of Emperor Lucius's  assault against King Arthur. At the beginning of that story, Sir Lionel and  this man's half-brother Sir Hector of Maris are imprisoned with other  naked knights by Sir Turquine. In one rescue attempt, he inadvertently  kills (*) Gaheris and Gareth. That happens after he kills the man who  betrayed him, Aggravain, and rescues a woman from the stake before  becoming a monk. Earlier, he was drugged then raped by Elaine, thus  fathering Galahad. For 10 points, name this knight of the round table known  for his adultery with Guinevere.
This man follows a bloody black dog to the crumbling manor of Sir  Gylbert the Bastard, only to find he was slain by Sir Meliot de Logres.  
Lancelot [Mallory spells it Launcelot]