Hello, I had a quick look on Family Search and came up with these records. They don't tell a lot but at least you now know when and where Thomas and have contact details for other people researching Thomas.
Good Luck wit your search.
Peter Euston
IGI
William Tefft
Birth; circa 1590 England
Death; 01 MAY 1648
William Tefft
Birth; abt 1590 Eng.
Wife; Ann
Marriage; circa 1614, Eng.
William Tefft
Birth; abt 1590, England
Death; abt 1648, Kingstown,Washington,RI
Wife; Ann
Marriage; abt 1615, RI
William Tefft
Birth; abt 1590, England
Christening; 6 May 1599
Death; abt 1648, Kingstown,Washington,Rhode Island, USA
Parents: Thomas Tefft & Sarah
Wife; Ann
Marriage; abt 1613, Providence,Providence,R.I.