Hello Clare,
I've just read your postings and I too am a descendent of William Lewis and Elinor Kewley.
Their son, Hugh's daughter, Catherine Lewis married Thomas Preston and my grandfather was one of their sons, Lewis Preston. Jo Swadkin helped me a lot with my family. How are you related, Clare?
My e-mail is: sgw2008@googlemail.com
Best wishes - Shirley.