The youngest child of Oberon’s second wife, Faiella Karm.
Faiella died in childbirth, and so Deirdre was raised by her elder siblings, predominantly Erica and Benedict (both of whom she now publicly despises). Indulged into rebellion by Corwin, she became something of a tomboy, and her refusal to wear dresses to even the most formal of events started a short-lived fashion rebellion among the young women of Amber City.
Oberon publicly disowned her when it came to light that she’d secretly married a member of House Venway. Whether or not she contracted the Venway Curse is unknown.