Lan·cas·tri·an /lænˈkæstriən, læŋ-/
adj 1: of or relating to the former English royal house or their
supporters; "Lancastrian royalty"
2: of or relating to the English city of Lancaster or its
residents; "Lancastrian city center"
n 1: a member (or supporter) of the house of Lancaster
2: a resident of Lancaster