Brangaine (variously spelled Brangaene, Brangwane, Brangien, Brangwin, etc.) is the handmaid and confidante of Iseult of Ireland in the Arthurian legend of Tristan and Iseult. She appears in most versions of the story. According to Rachel Bromwich, several parallels can be drawn between the character of Brangaine in French Arthurian romance and that of Branwen in medieval Welsh legend, lending credence to the theory that the former is ultimately based on the latter.