Map showing the lands
of the Manor of Westwick
© Jonathun Hunn & David Neal.
It should be noted that this map from BAR   236  was drawn before either the evidence showing Westwick Cottage to have bean the early Manor House of Westwick, or the evidence of a Roman Villa off Westwick Row were uncovered.  However that does not invalidate the overall thinking on the boundary of  the Manor. 

It should also be noted that Hemel Hempstead Lane should read Green Lane.