Cold Harbour or coldharbour is explained by historians as signifying a place with Roman origins. A place at some point along a Roman road. It definition is explained by A.K. Astbury in his book on the history and geography of The Thames Estuary. "Estuary, land and water in the lower Thames Basin", 1980, Carnforth Press. If you check most "coldharbour places and farms they are on the alignment of a Roman Road. Coldharbour, Surrey is beside Stane Street and a hill fort. Coldharbour farm at Tylers Green east of North Weald Bassett is on the Roman Road from Tilbury, Brentwood to Braughing.