Evardo was a grave and quiet youth, and when they returned to Evna he was crowned King Evardo XV and ruled wisely and with justice. He was fifteen years of age, had fifteen silver buckles on his jacket, and was the fifteenth Evardo to rule the Land of Ev. (Ozma of Oz)
Evardo and Ozma are married in L. Sprague de Camp's 1991 novel Sir Harold and the Gnome King and have a son named Oznev.
Evardo is a prospective husband for Ozma in a dynastic marriage, in Jellia Jamb, Maid of Oz.