Some Castellans are responsible for the overall defence and fortification of their Dukedom, bearing titles such as Castellan of Bastonne and Castellan of Quenelles. These Castellans are afforded a much greater degree of power, with lesser Castellans and Marquises owing their direct allegiance.
- Calard of Garamont - A mighty Grail Knight who rules as the Lord of Garamont and the Castellan of Bastonne.
- Guillaume de Grenouille - A knight renowned for his courage and brutality in battle, who served as the Castellan of Quenelles.
- 1: Warhammer Warhammer Fantasy RPG 2nd ED -- Knights of the Grail
- 1a: pg. 23
- 2: Knights of Bretonnia (Omnibus)
- 3: Warhammer: Perilous Quest