Newcastle upon Tyne, a status it retained until becoming part of Tyne and Wear in 1974. The regional nickname and dialect for people from Newcastle and the surrounding area is Geordie. Newcastle also houses Newcastle University, a member of the Russell Group, as well as Northumbria University. The city developed around the Roman settlement Pons Aelius and was named after the castle built in 1080 by Robert Curthose, William the Conquerors eldest son. The city grew as an important centre for the wool trade in the 14th century, and later became a major coal mining area. The port developed in the 16th century and, along with the shipyards lower down the River Tyne, was amongst the worlds largest shipbuilding and ship-repairing centres. Newcastles economy includes corporate headquarters, learning, digital technology, retail, tourism and cultural centres, from which the city contributes £13 billion towards the United Kingdoms GVA. Among its icons are Newcastle United football club and the Tyne Bridge. Since 1981 the city has hosted the Great North Run, a half marathon which attracts over 57,000 runners each year.