Wikipedia
Escors, Escorz or de Cors, is a family name of French- Navarrese origin belonging to an ancient lineage of the nobility of the Kingdoms of Navarre and France, whose coat of arms are recorded in the "Code of Flags of the Hispanic community", the "Basque Onomastic and Heraldic Dictionary", the "Basque-Navarrese Ancestral Houses", and in the "Armorial Général de France". Escors, Escorz and Eskorz were simultaneously used at least since the 13th century. Etymologically, "Escors" derived from the classic Latin word "Cohors-Cohortis" in its vulgar Latin form "Cors-Cortis" ( Cohort, Corps 1). The family name "Cors" (de Cors/de Corz/des Cors) permanently incorporated the Occitan medieval demonstrative article "Es-" between the 10th and 12th centuries (Es-Cors/ Es-Corz). Other important typographic forms of this surname found in Champagne and Navarre since the 14th century are Escorsi, Escorssi, Escorçi and Escorçy (or "d'Escourçy", "de Corçy", "d'Estorçy")
This family originated in Aquitaine, France and one of the oldest members was the Abbot of Saint-Savin-En-Lavedan (940-946), Bernard I d'Escors. This family served as an elite military corps of the House of Champagne as Crusaders, Knights of the Order of the Temple and Order of Hospitallers. The Escors arrived in Navarre in 1234 together with the Counts of Champagne, when they inherited the throne of Navarre. They formed Ancestral House at the village of Maya (Amaiur in euskera) in the Baztan Valley ( Navarre), Noble District of the Kingdom of Navarre and judicial district of Pamplona. The family's coat of arms incorporated the "Bell", which is the Emblem of the Villa of Maya.
The Escors family represented the Kings of Navarre from the 13th to the 15th century and exerted military, governmental and financial functions. Members of this family were possibly ancestors of among others the Tudor, Bourbon and Stuart dynasties, and the Navarrese composer Pablo Martín Melitón Sarasate.
The Escors family was closely related to other Baztanese houses of importance such as Borda, Maya, Echenique, Uharrichena (Oharrichena/Ocharrichena), Baztan and Goyeneche from the 15th to the 18th centuries, and to French families ( Ségur and the Counts of Bourg). Nevertheless, this family continued to serve the French Royal family from the 15th to the 18th centuries.