Yes I have proof and as she ended up married in poverty in London that is my final answerI have letters and belongings which came from Margaret after John's death. As far as I am concerned that is the end. There were 2 babies who died of scarlet but the others lived and have descendants. This is the last thing i intend to put on this site Elizabeth was born at Margaret's sisters house in Grasmere.
Sa E. never went to Cornwall she cannot be related to you. Sorry. Margaret