Map of Great Britain c.1360; The Gough Map; Historic Cartography

The Gough Map or Bodleian Map is a Late Medieval map of the island of Great Britain. Its precise date of production and authorship are unknown. The map's authorship is also unknown. It is thought that much of the information about the map was gained from either one or more men who travelled around Great Britain as part of Edward I's military expeditions into Wales and Scotland. The areas of the map's fringe with the most accurate detail often correspond with those areas in which Edward's troops were present The accuracy of the map in the South Yorkshire and Lincolnshire areas suggest that the author could be from this region. However, it is also possible that the map was constructed based upon the collation of various people's local knowledge. For example, the cartographic accuracy in Oxfordshire could be explained by the fact that William Rede, Fellow of Merton College, had successfully calculated the geographic coordinates for Oxford in 1340.