There is very little documentary evidence of dance being practised in Ireland prior to the 17th century. Scholars have hypothesised that this may result from the integral and consequently unremarkable nature of dance in pre-modern Irish society, or from the non-literate nature of the Irish cultural tradition. Indeed, the modern Irish words for "dance", rince and damhsa did not develop until the 16th century. The scant evidence available is primarily that of visitors to Ireland, such as a fourteenth-century song written in the South of England, where the poet invites his listeners to "come ant daunce wyt me in Irlaunde" . The first native Irish documentary evidence of dancing is an account of a Mayor of Waterford's visit to Baltimore, County Cork in 1413, where the attendees "took to the floor" to celebrate Christmas Eve. However, the Norman invasion of Ireland in the twelfth century is likely to have brought with it the round dance tradition, as it was contemporaneously performed in Norman strongholds.