E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
Nails of the Cross.
The nails with which our Lord was fastened to the cross were, in the Middle Ages, objects of great reverence. Sir John Maundeville says, He had two in his hondes, and two in his feet; and of on of theise the emperour of Canstantynoble made a brydille to his hors, to bere him in bataylle; and throghe vertue thereof he overcam his enemyes (c. vii.). Fifteen are shown as relies. (See IRON CROWN.)