Esquire, originally meant a shield-bearer, and was bestowed upon the two attendants of a knight, who were distinguished by silver spurs, and whose especial duty it was to look after their master's armour; now used widely as a courtesy title.
Definition taken from The Nuttall Encyclopædia, edited by the Reverend James Wood (1907)
Espy, James Pollard * Esquiros, Henry Alphonse