To the same William de Warenne Lewes owes the foundation or the refoundation of its Castle the second centre about which the town grew.
A glance at the map will assure us that Lewes could not but be a place of great importance, increasing with England in wealth and strength. The South Downs stand like a vast rampart back from the sea, guarding South England from surprise and invasion. But this great wall is broken at four different places, at Arundel in the west where the Arun breaks through the chalk to find the sea, at Bramber where the Adur passes seaward, at Lewes where the Ouse goes through, and at Wilmington where the Cuckmere winds through the hills to its haven. Each of these gaps was held and guarded by a castle while the level eastward of Beachy Head was held by Pevensey. Of these castles I suppose the most important to have been Lewes, for it not only held the gap of the Ouse but the pass by Falmer and in some sort the Cuckmere Valley also.
[Illustration: LEWES CASTLE]
But the great day of Lewes Castle was that of Simon de Montfort—I shall deal with that later. Here it will be enough to point out that only a fragment of the great building with its double keep, whose ruin we see to-day, dates from the time of the first De Warenne, the rest being a later work largely of Edward I’s. time.
Let me now return to the Priory which, in the development of the town, played a part at least as great as that of the Castle.


