Ave Crux Alba is the official anthem of the Order of Malta in Latin . Authorship and creation time is unknown.
Anthem Text
Ave Crux alba, summae pietatis signum,
Ave Crux alba, salutis nostra sola spes,
Corda fidelium inflamma, adauge gratiam, adauge gratiam.
Ut omnia vincat tuorum ardens caritas,
Ut omnia vincat tuorum ardens caritas.
Translation
Rejoice, white cross, sign of supreme piety,
Rejoice, White Cross, our only hope of salvation,
Kindle the hearts of the faithful, increase grace, increase grace,
That all conquers the ardent love of your people,
To all won the fiery love of your people. [one]