From A History of the County of Wiltshire: Volume 15, Amesbury Hundred, Branch and Dole Hundred. Originally published by Victoria County History, London, 1995:
South Newton.
An inn in the village was called the Swan in 1740, the White Swan in 1789. The Swan was open in 1844 and 1993, north of the junction of the Warminster road and the road through Stoford bottom: it was rebuilt in the 19th century, was again called the White Swan c. 1863, and was called the Black Swan in 1919.
www.british-history.ac.uk/vch/wilts/vol15/pp213-227