Fides (Fi`des) , the Roman goddess of fidelity, or steadfast adherence to promises and engagements. Numa built a shrine for her worship and instituted a festival in her honour; in later times a temple containing a statue of her dressed in white adjoined the temple of Jupiter, on the Capitol at Rome.
Definition taken from The Nuttall Encyclopædia, edited by the Reverend James Wood (1907)
Fidelio * Field, Cyrus West