Teillagory

D'Eon and Lia's fencing instructor, Teillagory is a legendary knight in the days of Louis XIV. He carries an antique sword which was given to him by Louis XIV. Teillagory lost his only son in a war several years prior to the start of the series. (Source: [Wikipedia](http://en.wikipedia.org/wiki/List_of_Le_Chevalier_D%27Eon_characters))