Phyllis was a settler of the Commonwealth together with her grandson Samuel sometime before October 23, 2287. ... Believing that she killed Samuel, Phyllis concludes that she must be a synth controlled by the Institute and that she lost control because she was given an order to kill.

Is Sturgis from Fallout 4 a synth?

Background. An escaped synth, Sturges is a talented repairman, capable of fixing anything that passes through his hands. He also possesses considerable knowledge of the pre-War world, but unfortunately, all that knowledge does not translate into hacking or lock picking talents.

How do you unlock Somerville in Fallout 4?

You have to have it come up randomly from Preston/Minuteman radio, otherwise the guy there simply won't talk to you. Shot the farmer. Children ran off, took the settlement for myself. Populated the place with settlers from FH shortly after.