Here's an article about the archaeology of Tintagel.

"Significant finds include a section of a fine Phocaean red slipware bowl from Turkey, imported amphorae thought to be from southern Turkey or Cyprus, and fine glassware from Spain. Cow, sheep and goat bones showing signs of butchering and cooking were unearthed, plus a cod bone – possible evidence of deep-sea fishing being carried out from Tintagel."

That's really cool!