found: Catholic Church. Pope. Bulario de la Orden Militar de Calatrava, 1981 (a.e.)t.p. (Orden Militar de Calatrava)
found: Leon (Kingdom). Sovereign (1406-1454 : Juan II). Sentencia de Juan II en 1410 sobre los molinos de Bolarque, 1983:p. 3 of booklet (Orden Militar de Calatrava)
found: NUC pre-1956(hdg.: Orden de Calatrava; usage: Ordo Militiae de Calatrava, Orden y Cavalleria de Calatrava, Orden Militar de Calatrava)
found: Espasa(Calatrava, Orden de; oldest Spanish military and religious order; f. 1158)
found: New Catholic encycl.(Calatrava, Order of; Spanish military and religious order; f. Jan. 1158; gradually after 16th cent. transformed into honorary society of noblemen, though monastic adherents remained; all Spanish military orders dissolved in 19th cent.)