When the Normans invaded England in AD1066 Ware was a thriving and prosperous town. At the time of the Conquest, Ware was held by Askell of Ware, who was a Thane of King Edward and Earl Harold; one of the most important men in the county.

Domesday book states that the Manor was given to Hugh de Grandmesnil and was valued at £45 in 1086. A reduction from the £50 it was valued at before 1066.

Hugh de Grandmesnil continued to hold the Manor of Ware and it was his descendants that realigned Baldock Street to develop the High Street and built a bridge on the current site. This permitted travellers along the Old North Road, to cross the river safely in all weather, avoiding Hertford altogether.

Ware’s Alien Benedictine Priory was founded by Hugh de Grandmesnil in 1087. The Franciscan Grey Friars were granted a licence to establish a Friary in Ware in 1338, on the site now known as the Priory. Ware was on the popular route for pilgrims travelling to Walsingham and provided sustenance on their way. When pilgrimages were forbidden by Edward VI, Ware had to find another way to make money.