John Myles, also known as John Miles, (c. 1621–1683) was the founder of Swansea, Massachusetts, and the founder of the earliest recorded Baptist churches in Wales (UK) and Massachusetts (US). John Myles was born in Wales around 1621 and was educated at Brasenose College at Oxford University. He then went to London where he visited the Glasshouse church, an early Particular Baptist (Reformed Baptist) congregation. Myles then returned to Ilston in Wales, where he served as a minister from 1649 to 1662 and he served as a "tryer" for ministers under Oliver Cromwell's government. After the restoration of the monarchy and requirement for all ministers to adhere to the Book of Common Prayer, Myles left England for the Plymouth Colony in the 1660s. Myles took the historic Ilston Book to North Amer