John Martin (1789-1869) was a London-based, Edinburgh-educated physician interested in anthropological matters. This is his only book. He was inspired to write it by a chance encounter with its subject, William Mariner (1791-1853) who spent four years (1806-1810) in Tonga, in the South Pacific, one of the earliest European residents at a time before European influence disturbance or modification society. Mariner, an extraordinarily mature and perceptive youth, became thoroughly imbued with Tongan language and culture as the adopted son of the most powerful chief in Tonga. Thanks to Martin's intelligent engagement with Mariner resulted in a compelling narrative and a comprehensive account of Tongan society which became a classic. Often celebrated as an extraordinary real-life adventure story, it is a pioneering work of anthropology, and for 200 years it has been a primary and authoritative source for research into Tongan history and culture.