The whole building is essentially Norman in spite of the addition of Early English, Decorated, and Perpendicular work. The nave of eight bays is of exceptional length, being divided from its aisles by seven massive columns and having both triforium and clerestory. The groined vaulting dates from the 14th century. There are also north and south transepts, the latter having an eastern apsidal chapel; a choir of two bays, while the ambulatory is surrounded by four polygonal chapels. The massive and lofty tower was erected in 1130. Immediately beneath it is inserted a brass to Edward, son of Henry VI., who was foully murdered after the battle of Tewkesbury in 1471. This battle, so fatal to the cause of the Red Rose, was fought in a field within half a mile of Tewkesbury, long after known as the Bloody Meadow. Many of the wounded sought refuge in the abbey, only to be dragged forth, after a few days, to their execution in the market place. Among the many structural beauties which abound in Tewkesbury, none reflect more credit on the design and workmanship of mediæval times than the seven beautiful pointed windows of the choir. The ancient stained glass which fills in these windows is of priceless value--the purity of its colouring excelling the very best modern work. Much of the original glazing has disappeared--that which remains has occupied its place for over four and a half centuries and is a highly prized possession. The window on the north exhibits Fitz-Hamon, the Norman knight who liberally endowed the abbey at the time of its rebuilding in 1102 and was mortally wounded at the siege of Falaise.