Hi Vicky. Your grandmother is my grandfathers (James F. Dwan, son of Thomas F. Dwan- your grandmothers uncle) cousin. Making you my third cousin. Her parents Lily Sarah and George Charles, lived at 289A Rotherhithe Street, Rotherhithe, London during the second world war.
Im sorry I dont know Lily's maiden name.
It would be great If you could tell me anymore about George C., or His father and Grandfather.
James M. Dwan