 As happened the length and breadth of England it is likely that similar projects were copied by a local draughtsman, and in the case of Winslow Hall, Wren kept an eye on the work and the books as a favour to his friend.Whatever the truth, it is doubtful three hundred years later a definite answer to the architect's identity will be found.Thus without stronger evidence, while it is probable Wren was involved, Winslow Hall can only be attributed to Sir Christopher Wren.