Dungannon (Irish: Dún Geanainn) is a town in County Tyrone in Northern Ireland. It is the third largest city in the county and had the Census 2001 11.139 inhabitants. Dungannon was the administrative seat of the dissolved Districts Dungannon and South Tyrone Borough Council. Well known is the traditional Royal School in Mountjoy on Lough Neagh. It was founded in 1614 by the English King James I and is the oldest school in Ireland. The former major linen production is insignificant today; there is a known glass blowing, the one that can be visited Tyrone Crystal Factory. The football club of the city of Dungannon Swifts FC; he plays in stangmore park.