Newport is a city as well as unitary authority area in south east Wales, on the River Usk close to its convergence with the Severn Estuary, 12 miles (19 km) northeast of Cardiff. At the 2011 census, it was the 3rd biggest city in Wales, with a population of 145,700. The city forms part of the Cardiff-Newport metropolitan area, with a population of 1,097. Newport has actually been a port since middle ages times, when the first Newport Castle was developed by the Normans. The town outgrew the earlier Roman town of Caerleon, promptly upstream, and also acquired its initial charter in 1314. It grew substantially in the 19th century, when its port came to be the emphasis of coal exports from the eastern South Wales Valleys. Until the surge of Cardiff from the 1850s, Newport was Wales' largest coal-exporting port. Newport was the site of the last large-scale armed insurrection in Britain, the Newport Rising of 1839 led by the Chartists. This was led by the Chartist John Frost which brought about the re-branding of the Duffryn High School into John Frost School. In the 20th century, the docks declined in relevance, but Newport continued to be an important manufacturing as well as engineering centre. It was provided city standing in 2002. Newport held the Ryder Cup in 2010 as well as was the place for the 2014 NATO summit.