Wiktionary
dei gratia
adv. by the Grace of God
Usage examples of "dei gratia".
Sometimes, even more royally, it was Dei Gratia Dux: nobody but a King before had been said to hold power by the Grace of God.
It was addressed to Serenissimo Domino Nostro Iohanni Quarto, Dei Gratia, Angliae, Franciae, Scotiae, Hiberniae, Novae Angliae et Novae Franciae, Rex, Imperatore, Fidei Defensor, .