Did you get any further with your query?
I have found a lot of conflicting information over the years regarding Thomas Dewey's roots in England, but have failed to find any reference to official records. Recently I have uncovered hard evidence (mainly parish records) that has led me to conclude that Thomas Dewey was born in 1606 at Hinton Martell in the county of Dorset, England; his father was Thomas (died 1636) and his mother was Mary Moore (died 1637). I believe he sailed from Swanage in Dorset some time prior to 1633. My website http://www.deweywiltshireroots.org.uk/
has the details. I would be interested in your opinion of my hypothesis.