Baobhan Sith

A member of Faerie Britain's Knights of the Round Table. A Fairy Knight who assumed the name of the Saint Graph of Tristan who belongs to the Proper Human History's Knights of the Round Table. She receives favorable treatment as the "daughter" and successor of the ruler of Lostbelt Britain, Morgan. One of two fairies raised as witches in a Britain where magic is deemed unnecessary.

(Source: TYPE-MOON Wiki)