Salisbury ( ) is a cathedral city in Wiltshire, England with a population of 41,820, at the confluence of the rivers Avon, Nadder and Bourne. The city is approximately from Southampton and from Bath. Salisbury is in the southeast of Wiltshire, near the edge of Salisbury Plain. Salisbury Cathedral was formerly north of the city at Old Sarum. The cathedral was relocated and a settlement grew up around it, which received a city charter in 1227 as . This continued to be its official name until 2009, when Salisbury City Council was established. Salisbury railway station is an interchange between the West of England Main Line and the Wessex Main Line. Stonehenge is a UNESCO World Heritage Site and is northwest of Salisbury. Toponymy The name Salisbury, which is first recorded around the year 900 as Searoburg (dative Searobyrig), is a partial translation of the Roman Celtic name Sorbiodūnum. The Brittonic suffix -dūnon, meaning "fortress" (in reference to the fort that stood at Old Sarum), was replaced by its Old English equivalent -burg. The first part of the name is of obscure origin. The form "Sarum" is a Latinization of Sar, a medieval abbreviation for Middle English Sarisberie. Salisbury appeared in the Welsh Chronicle of the Britons as Caer-Caradog, Caer-Gradawc, and Caer-Wallawg. Cair-Caratauc, one of the 28 cities listed in the History of the Britons, has also been identified with Salisbury. History Old Sarum The hilltop at Old Sarum lies near the Neolithic sites of Stonehenge and Avebury and shows some signs of early settlement. It commanded a salient between the River Bourne and the Hampshire Avon, near a crossroads of several early trade routes. During the Iron Age, sometime between 600 and 300 BC, a hillfort (oppidum) was constructed around it. The Romans may have occupied the site or left it in the hands of an allied tribe. At the time of the Saxon invasions, Old Sarum fell to King Cynric of Wessex in 552. Preferring settlements in bottomland, such as nearby Wilton, the Saxons largely ignored Old Sarum until the Viking invasions led (King of Wessex from 871 to 899) to restore its fortifications. Along with Wilton, however, it was abandoned by its residents to be sacked and burned by the Dano-Norwegian king Sweyn Forkbeard in 1003. It subsequently became the site of Wilton's mint. Following the Norman invasion of 1066, a motte-and-bailey castle was constructed by 1070.