Caerleon (Caer`leon) , a small old town in Monmouthshire, on the Usk, 2½ m. NE. of Newport; celebrated by Tennyson in connection with Arthurian legend; it is a very ancient place, and contains relics of Roman times.
Definition taken from The Nuttall Encyclopædia, edited by the Reverend James Wood (1907)
Caen * Cæsalpinus