What Abbey that was built on the sight of the Battle of Hastings is located some nine miles (14 km) to the south-east of Burwash?
Burwash:  In an area steeped in history, some nine miles (14 km) to the south-east lies Battle Abbey and eight miles (13 km) to the east is Bodiam Castle. Battle Abbey: Battle Abbey is a partially ruined Benedictine abbey in Battle, East Sussex, England.
Battle Abbey