Found this interesting. I believe my great grandparents to be Thomas Nash and Elizabeth Archer. One of their daughters was Eleanor Mary Nash and her sister was Muriel, your grandmother.
I visited Muriel when I was a child and met her son Chris Morgan who worked for the BBC. Eleanor married a William Henry Mason and had three children, the second one, Clement Geoffrey (names after Clements Tump), being my father. He was a Doctor in Bristol, where I was born.
Further information available but not much of the earlier connections.