Provided neverthelesse That this Act nor any thing therein contained shall make void or null certaine Letters Patents granted by the Kings Majesty unto Sir John Wintour Knight Francis Finch and Robert Cleyton Esquires in or about the Thirtieth of July in the Fourteenth yeare of his now Majesties Reigne of certain Woods and Iron works in the Forrest of Dean for a certain term of yeares yet unexpired