On the back is a picture of Lewes Castle.

The manor of Clayton was held at that time by William de Watevile for William de Warenne, who built the nearby Lewes Castle.

Donated Lewes Castle to the Nation

The principal town museum is Barbican House Museum at Lewes Castle, which hosts the Lewes Town Model as well as four galleries of Sussex archaeology.

Lewes Castle stands at the highest point of Lewes, East Sussex, England on an artificial mound constructed with chalk blocks.

Lewes Castle was built in 1069 by William de Warenne, 1st Earl of Surrey, the brother-in-law of William the Conqueror.

The southern keep of Lewes Castle, which overlooks the Guild's headquarters, is featured above the helmet as the crest.

Gundred married before 1070 William de Warenne, 1st Earl of Surrey (d. 20 June 1088), who rebuilt Lewes Castle, making it his chief residence.

In 1922 he donated Lewes Castle to the Sussex Archaeological Society, of which he was a long-serving chairman.

In April of the same year Warenne was present for the Battle of Lewes (fought near his ancestral home, Lewes Castle).