Sam Glover was the eldest son of Henry Glover, a candidate for overseer endorsed by the Utilitarian, Divine Will, and Allied Service Workers Blocs.
He was the oldest son amongst six children, including Henry Jr. Glover. His father tried to use his and his son's family as a reason to not be elected, and mentioned him by name. This appeared to work, as Nathan Stone was apparently in the lead for Overseer before his wife Katherine was elected due to her murder of other members of another voting bloc.
Sam Glover is mentioned only in Fallout: New Vegas.