The status of the town was changed by a later charter of Charles I by at once the formal separation from Portsmouth and the recognition of Southampton as a county, In the charter dated 27 June 1640 the formal title of the town became 'The Town and County of the Town of Southampton'. These charters and Royal Grants, of which there were many, also set out the governance and regulation of the town and port which remained the 'constitution' of the town until the local government organisation of the later Victorian period which from about 1888 saw the setting up of County Councils across England and Wales and including Hampshire County Council who now took on some of the function of Government in Southampton Town. In this regime, The Town and County of the Town of Southampton also became a county borough with shared responsibility for aspects of local government. On 24 February 1964 the status changed again by a Charter of Elizabeth II, creating the City and County of the City of Southampton.

Answer this question, if possible (if impossible, reply "unanswerable"): What year did Southampton receive the charter naming it 'The Town and County of the Town of Southampton'?
1640