The Normans arrived in Cornwall in 1070, around four years after seeing off the English at Hastings. Once here, they threw up a handful of their trademark castles, probably at first wooden structures on top of a raised piece of ground – a motte – overlooking an enclosed courtyard – or bailey. The first two hugged the Tamar at Launceston and Trematon and were joined within a few decades by a castle at Restormel, near Lostwithiel. The location of the first castles in the far east suggest an initial uncertainty about possible insurgencies by the native Cornish.
In the 1100s these castles were rebuilt with impressive stone keeps and, along with Tintagel, which was built in the early 1200s, eventually became the visible symbols of the power of the earldom of Cornwall. Trematon is probably the least well-known of the four but stands comparison with the others. It’s described in the recent edition of Pevsner’s Buildings of England as ‘more impressive than Launceston, if not as perfect as Restormel’.
Situated on a hill overlooking a branch of the Tamar estuary near Saltash, Trematon castle was sold to the earl in 1270 and since then has been the property of the earldom and, from 1337, the Duchy of Cornwall. In the late 1200s a gatehouse was built, together with a hall and other buildings in the bailey. The gatehouse survives although the other buildings have long gone, being replaced in 1808-09 by a country house. In the process part of the castle wall was demolished in order to obtain a sea view.
Handed around from favourite to favourite by a succession of earls and dukes, the castle for the most part remained untroubled by the swirls and currents of medieval and early modern history. One flurry of excitement occurred in 1400 when Geoffrey Penriche, bailiff of Trematon, led a group of armed men into Saltash in belated support of a rising to restore Richard II to the throne taken by Henry IV. Failing miserably to garner support from the townsfolk, Penriche contented himself with stealing some cash and a few barrels of red wine before riding off eastwards into the dustbin of history.