The name Trebarwith was first associated with the village on the higher ground to the south of the valley which is the most southerly part of Tintagel parish. Land at
Trebarwith is first mentioned in records of 1284 and was held from 1329 until the early 16th century by the Lercedekne family. Trebarwith Farm is a Grade II listed building. The road along the valley from Penpethy to the Strand is known as the Sanding Road and was originally built c. 1825 to allow the collection of sand. The local soil is acidic and so sand and lime were fed into it. The sand was loaded into sacks and carried up the hill by donkeys and ponies. A large pool that can be accessed at low tide is known as the horses' pool as this is where the animals cooled off on hot days. Trebarwith Strand was central to Tintagel's slate industry. Quarrying has taken place here since the fifteenth century and around eight disused
quarries scar the coast between the beach and
Tintagel Castle. There are also quarries lining the Sanding Road as it climbs up from the beach. Ships brought coal to Port William at the southern end of the beach where cranes and derricks would winch slate down the cliff to be taken away for export. At Lill Cove a small water-powered copper mine led up from the beach to the cliffs above Trebarwith, though the tunnels at the beach end have now been blocked by rock falls. A wide "road" has been cut through the rocks at the top of the beach to allow access for the donkeys and ponies bringing sand to the settlements inland. In the 19th century, a hotel was built close to the access point to the beach. The building is now gift shops and holiday apartments. At some point in the 1970s, the hotel stable block was converted into a pub now called the Port William. In October 1886, the barque
Sarah Anderson was wrecked off Gull Rock with the loss of all on board. In February 2015, a man was swept out to sea while scattering his sister's ashes at the beach. ==Natural history==