Princess of the House of Irenaeus, she was the third child of King Sartorius. She died quite young, owing (many believe) to the Curse of Inner Fire.

She appears to have been very intelligent and well-read, possibly as a result of repeated confinements to bed owing to her illnesses. She appears to have been amused by the antics of the Elfhame Rangers, and interested in Elfhame itself. For a period of time, the official name of the Rangers was "Princess Stella's Elfhame Rangers." Her death was the cause of much sorrow to her father and brothers.

Stella Winterbough may have been named for her, and Stella Rosebush-Aspen, indirectly, as well.