Arthur Maxson

 is the last descendant of the Maxson dynasty, the founders and traditional leaders of the Brotherhood of Steel. He was born in 2267 to Jonathan and Jessica who are both deceased at the time of Fallout 3. Still a child and ranked as Squire, he has been placed under the supervision of Elder Owyn Lyons. Due to internal conflicts in the Brotherhood of Steel this move was made to increase his personal safety; he is considered to be safer in the Citadel, even though it is located in enemy territory.

He can usually be found in the Citadel's B-Ring where his room (and personal terminal) is located.

Appearances
Squire  appears only in Fallout 3.

Behind the scenes
 is likely a recreation of Arthur Pendragon. He is the rightful heir to the Brotherhood of Steel, but has been sent to live with a foster father for his safety. His Kingdom is divided and the factions cannot agree upon a leader. Arthur Maxson is being trained in the ideal of might for right, which his Kingdom has never followed.