[@Nightwing95]

Beowulf does work and is more than welcome!

As for Galahad, Arthur sent all of his knights on missions/errands/tasks to get out of Camelot before Albion pretty much went poof. Galahad doesn't necessarily require Lancelot to have tried and failed to get the Holy Grail, nor does he need Lancelot or Percival to accompany him to retrieve it. ;o It's up to you whether he succeeded in retrieving it before the Cataclysm hit or was whisked away by Merlin in the middle of the quest.