Caleb Carson, the head of the family, was the only survivor of the family after they died following the Free States mission to eliminate the Scorched. He later killed himself via a gas explosion due to the guilt and remorse he felt.
Entered through an unlocked Free States bunker, the first room is storage area with some containers around. A northern staircase leads down then west to the kitchen. The whole kitchen is burned black with it's door blown off due to a gas explosion. Against its western wall is a small pile of bones, presumably Caleb Carson's.
The south drops down into a living space. To the west is a bathroom with two searchable chem containers. To the south of the living space is a laundry room on the right and a bedroom on the left containing three beds. East of the living area a hallway connects to a storage room on the left and a generator room on the right with a fusion core.
The Carson family bunker appears only in Fallout 76.