There is no doubt that the history of Saltash is linked to the passage, or ferrying place across the Tamar. The original ferry became established by fishermen for those passing to and from the monastery at St Germans and to Trematon Castle.
After the Norman Conquest, Robert, Count of Mortain, who held the castle and manor at Trematon, took the market from the canons at St. Germans and established it at Saltash. The Count granted Trematon and other manors to the de Valletorts, who had then to provide for the ferry boat. In the twelfth century a borough was founded (1190), and Saltash became the only franchised seaport between Dartmouth and Fowey. This fact has given rise to the Saltash saying, Saltash was a borough town, when Plymouth was a fuzzy down ('fuzzy' = 'fursy' i.e. covered in gorse), as the town of Plymouth and its seaport did not exist in 1190. In medieval times the ferry was part of the manor of Trematon, held by the Valletorts.