Note 25 — Chapter II · PHYSICAL HISTORY OF CAVES.
Reading edition
When the English conquered Somerset from the Brit-Welsh, they translated the Celtic Ogo into Hole, whence the cave and village of Wookey Hole were named, just as they translated a neighbouring hill, called Pen, into Knowle, the generic Celtic term in each case being used to specify a particular object. There are many other instances of the like use of a Celtic name by the English conquerors of the Celts. In the Limestone plateau of Llanamynech, near Oswestry, there is a cave called “The Ogo.”