Hello, my Grandmother was a Johns, born Martha Johns near St Austell at Tregonissey with her two brothers Jim/James and I think Dick/ Richard, called "Dixie." They emigrated to the US around 1900 and settled in Concord New Hampshire, where she met my grandfather Royal Tennyson Brunel.
I think she was born about 1889. Her mother was a Blamey. She died at the end of 1987 I think and I'm not sure about Uncle Jim. They were both very long-lived.
There could be some connection?