Huntingdon is a market town in the Huntingdonshire district of Cambridgeshire, England. The town was given its town charter by King John in 1205. It was the county town of the historic county of Huntingdonshire. Oliver Cromwell was born there in 1599 and became one of its Members of Parliament (MP) in 1628. The former Conservative Prime Minister (1990–1997) John Major served as its MP from 1979 until his retirement in 2001. Huntingdon was founded by the Anglo-Saxons and Danes. It is first mentioned in the Anglo-Saxon Chronicle in 921, where it appears as Huntandun. It appears as Huntedun in the Domesday Book of 1086. The name means "The huntsman's hill" or possibly "Hunta's hill". Huntingdon seems to have been a staging post for Danish raids outside East Anglia until 917, when the Danes moved to Tempsford, now in Bedfordshire, before they were crushed by Edward the Elder. It prospered successively as a bridging point of the River Great Ouse, a market town, and in the 18th and 19th centuries a coaching centre, notably at the George Hotel. The town has a well-preserved medieval bridge that used to serve as the main route of Ermine Street over the river. The bridge only ceased to be the sole crossing point to Godmanchester in 1975, with the building of what is now the A1307 (formerly A14) bypass. The town's valuable trading position was secured by Huntingdon Castle, of which only the earthworks of the motte survive. The site is a Scheduled Ancient Monument and home to a beacon used to mark the 400th anniversary of the Spanish Armada. In 1746, the nurserymen Wood and Ingram of nearby Brampton developed an elm-tree cultivar, Ulmus × hollandica 'Vegeta', which they named the Huntingdon Elm after the town. Original documents on Huntingdon's history, including the borough charter of 1205, are held by Cambridgeshire Archives and Local Studies at the County Record Office, Huntingdon. Parts of Huntingdon, including the centre, were struck by an F1/T3 tornado on 23 November 1981, during a record-breaking nationwide tornado outbreak on that day.