parson: [13] Parson and person started off as the same word (both come from Latin persōna) but split into two. It is not altogether clear why parson came to be used for a ‘priest’. It may simply have been a specialized application of an extended post-classical sense of Latin persōna, ‘person of rank, important person, personage’ – hence ‘person of high position within the church’. But it has also been speculated that it originated in the notion of the priest as the ‘person’ who legally embodied the parish (who could for example sue or be sued on behalf of the parish). => person[parson etymology, parson origin, 英语词源]