Henry Roberts

Henry Roberts was the mayor of Diamond City when Nick Valentine first traveled to the the 'diamond of the Commonwealth'. Henry offered Nick Valentine a house in the city in gratitude for saving his daughter from a party of kidnappers.

Although Nick does not specify any date he says he came to Diamond City a couple years after the Broken Mask Incident of 2229 and since McDonough was mayor by 2282, this means Henry Roberts was mayor of Diamond City around the middle of the 23rd century.

Appearances
Henry Roberts is only mentioned in Fallout 4.