In the clerestory the windows are modern.
"Account of a Tour in Normandy, Vol. II. (of 2)"
Dawson Turner
The interior, with its vast nave, double aisles, and complex apse, its lofty piers, with capitals consisting of life-sized figures in niches, and its noble clerestory, presents an appearance of grandeur unequalled by any other Gothic church in Italy.
"Architecture"
Nancy R E Meugens Bell
Above this, the walls rose into a clerestory, pierced with round-headed windows at regular intervals; and a high entablature supported the great tie-beams of the wooden roof.
"The Ground Plan of the English Parish Church"
A. Hamilton Thompson