Welcome, Keith, to the forum.
I do not have anything to add but I just wanted to say that I forgot to mention the fact I have ancestors from Flamstead in Hertfordshire, where some of the Hedges lived for a time. My Ginger and Potton families intermarried (they were from Great Gaddesden and Flamstead) and were not travellers but I don't think they were particularly well off either.
I just thought I would mention them. A lot of the families in this area of Hertfordshire became Methodists and many of their baptisms and marriages can be found in Luton, Bedfordshire, whilst they were still living in Hertfordshire.