The Trow of Duncaster: Demon Thief book 1 (ebook) by Mel Polk

Duncaster is ruled by a king who despises magic. Anyone with latent talent is consigned to the Brotherhood of Righteous Light, where they are raised to be weapons for the kingdom. Freedom isn’t an option for mages. After discovering his first wife–and, by extension, the crown prince–harbored magical talent, King Sten sent the church to eradicate any House with a trace of magic–human, fae, dem…