Lancastrian noun & adjective. [laŋ'kastrɪǝn] M16.
[from Lancaster a city in NW England, formerly the county town of Lancashire + -IAN.]
1. Hist. (An adherent or supporter) of the family descended from John of Gaunt (1340-99), Duke of Lancaster, fourth son of Edward III, esp. in the Wars of the Roses. Cf. YORKIST. M16.

2. (A native or inhabitant) of Lancaster or Lancashire in NW England. L18.

[TahlilGaran] English Dictionary ▲