Samuel Quill is a character from the Tomb Raider Comics.
Lara meets him in Issue 10. He is the former head of the Midnight Squires. He was not happy with them getting off track, so he left them. They believe him to be dead.
He makes a surprising return in Comic Issue 17 to help Lara and stop the Avatar.
When Lara accompanies Caronne to the future, a much older version of him is the one to help her back to her own time.