The Marquess of Abergavenny is a title in the peerage of the United Kingdom, created in 1876. It is associated with the historic county of Monmouthshire in Wales. The title is held by the Nevill family, who have a long lineage dating back to the medieval period. The current holder is the 7th Marquess, who succeeded his father in 2015. The Marquessate is part of the larger British aristocracy and carries with it various responsibilities and privileges. The family seat is Abergavenny Castle, which has historical significance and attracts visitors interested in Welsh history. The title is also linked to the House of Lords, where peers traditionally had a role in governance.