Moriarty Senior

 was the father of Colin Moriarty that came to the Capital Wasteland from Ireland.

Background
Moriarty Senior came to the former United States from Ireland with his young son, and amassed his wealth using the nearby trade routes, which helped secure Megaton as a trading hub in the area. He died during a raider attack in 2241 and his son inherited his wealth, including the saloon.

Appearances
is only mentioned in the Fallout 3 Official Game Guide.