Wessex in classical heraldry and is found on a number of church windows in derived shields such as the Arms of the Collegiate Church of St Peter at Westminster (Westminster Abbey, which was founded by the king). At its greatest extent Wessex encompassed the modern areas of Hampshire, Isle of Wight, Dorset and Wiltshire, as well as the western half of Berkshire and the eastern hilly flank of Somerset. This covers an area of about . The English author Thomas Hardy used a fictionalised Wessex as a setting for many of his novels, adopting his friend William Barnes' term "Wessex" for
Wessex West Somerset Yeomanry adopted a Wessex Wyvern rampant as the centre piece for its cap badge, and the current Royal Wessex Yeomanry adopted a similar device in 2014 when the Regiment moved from wearing individual squadron county yeomanry cap badges to a unified single Regimental cap badge. When Sophie, Countess of Wessex was granted arms, the sinister supporter assigned was a blue wyvern, described by the College of Arms as ""an heraldic beast which has long been associated with Wessex"". In the 1970s William Crampton, the founder of the British Flag Institute, designed a flag for the Wessex region which