House of Calatrava
“In Hoc Signo”
Origin: Lords of Calatrava la Vieja, frontier defenders
The secular lords who supported the Order of Calatrava in defending the crucial Guadiana river crossing. They maintained the civilian settlement around the fortress.\n\nCalatrava la Vieja was one of the most strategically important positions in medieval Spain, controlling the route between Castile and Al-Andalus.\n\nThe family transitioned from military frontier lords to prosperous landowners as the frontier moved south, developing the agricultural wealth of La Mancha.