I live in Nottingham uk , I used to live in Newcastle in the uk, but moved to nottingham when i was small . The Summerson name in the north of England is nearly as common as Smith in the rest of the country. As a child i was told the Summerson name may have close links with the nordic ( Vikings )vistors that ,we had in the north of England. The name was explained to me to come from the nordic Son -son of summer = SUMMERSON.
Also i know in the early part of the last century a number of our famliy members emigrated to the united states and settled in pittsburge althought i have never tried tracing them.