 Captain Blackwell chose that name to honor Mortlake in Surrey, England (now part of greater London).Geographically, the northbound followed Mashamoquet Brook, the eastbound followed the Quinebaug.The western boundary was approximately half mile west of and parallel to today’s Connecticut State Route 169, while the southern boundary laid approximately half mile north of today’s U.S. Route 6 – looking at a map, it roughly aligned with Herrick Road and the part of Brown Road that runs more or less straight east-west.