Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Pentewan (Cornish: Bentewynn) is a coastal village and former port in south Cornwall, United Kingdom. It is situated at grid reference SX 019 472 three miles (4.5 km) south of St Austell at the mouth of the St Austell River .The village and its harbour date back to medieval times, when Pentewan was mainly a fishing community, with some stone-quarrying, tin-streaming, and agriculture. Leland, writing in 1549, referred briefly to 'Pentowan' as "a sandy bay witherto fischer bootes repair for socour".