Éadha

Éadha is the servant girl protagonist of Clíodhna O'Sullivan's Her Hidden Fire trilogy — a young woman from the lowest social position in a magic-defined society who discovers she possesses channeling ability, the rarest and most powerful form of magic in her world. Her discovery upends everything her society has assumed about who magic chooses and why, making her simultaneously valuable and dangerous to those in power.

Éadha's journey is driven by the combination of her exceptional ability and her fierce loyalty — particularly to Ionáin, her childhood friend whose threat of exile sets the trilogy in motion. O'Sullivan writes her with the specificity of someone drawing on Irish cultural and mythological tradition, giving Éadha a voice and world that feel genuinely rooted in a non-English-language fantasy tradition. Her growth from hidden servant to someone who cannot hide what she is forms the trilogy's central arc.