Bob, I have basic information for you. My husband's family is from Olney England. I have recently been working on the family tree with the basic information passed along by his mother.
You can find a lot of info on :http://xenia.media.mit.edu
Look for Edmund Farrington 1588-1670
I John was one of the son's and according to the information on Edmund and his offspring, one of John's son's seems to have been indicted twice in the Salem Witch Trials. This was news to us also!
My husband's family is from Edmund's son Matthew.
If you can not find this info I would be happy to mail you a copy. Please reply to my email address and I will get back with you. I have run into some dead ends but there is a lot of info out there on the Farringtons and I'll help as much as I can with what I have found.