Spoilers through Fourth Wing. The overview is spoiler free; facts that give away later events stay folded under the book that reveals them.
Violet's older sister
Mira Sorrengail first appears in Fourth Wing, the opening book of the Empyrean series. She is the older sister of Violet Sorrengail and a daughter of General Lilith Sorrengail, and Brennan Sorrengail is her brother. Her rank and her dragon are spoilers for Fourth Wing, so they sit in the folded section below. Each line there names the independent fan guides, at least two, that list it, with the date we checked.
Mira first appears in Fourth Wing, book one of the series.
No spoilers Listed by theBookFeed and Esta Pinto (both opened Oct 14, 2026)
She is Violet Sorrengail's older sister.
No spoilers Listed by theBookFeed and Empyrean Riders (both opened Oct 14, 2026)
Her mother is General Lilith Sorrengail.
No spoilers Listed by theBookFeed and Empyrean Riders (both opened Oct 14, 2026)
Brennan Sorrengail is her brother.
No spoilers Listed by theBookFeed and Empyrean Riders (both opened Oct 14, 2026)
In Fourth Wing she is a lieutenant.
Spoilers through Fourth Wing Listed by theBookFeed and Empyrean Riders (both opened Oct 14, 2026)
Her dragon is Teine.
Spoilers through Fourth Wing Listed by theBookFeed, Empyrean Riders and Esta Pinto (all opened Oct 14, 2026)
These facts come from unofficial fan guides, not the author or the publisher. A fact is shown only when two sites with different owners state the same thing; we write every sentence ourselves and quote nothing.