Trudeliede

Trudeliede (トルデリーデ, Toruderiide) is an archnoble of Ehrenfest and Karstedt's second wife. Together, they have a son named Nikolaus.

Spoiler from Part 4 Volume 4 Until her marriage Trudeliede served Lady Veronica as an attendant.

Trudeliede's and Rozemary's families had a feud that caused significant strife in Karstedt's family.