Duchy of Gascony in the context of "Kingdom of Navarre"

Richard I (8 September 1157 – 6 April 1199), known as Richard the Lionheart or Richard Cœur de Lion (Old Norman French: Quor de Lion) because of his reputation as a great military leader and warrior, was King of England from 1189 until his death in 1199. He also ruled as Duke of Normandy, Aquitaine, and Gascony; Lord of Cyprus; Count of Poitiers, Anjou, Maine, and Nantes; and was overlord of Brittany at various times during the same period. He was the third of five sons of Henry II of England and Eleanor of Aquitaine and was therefore not expected to become king, but his two elder brothers predeceased their father.

By the age of 16, Richard had taken command of his own army, putting down rebellions in Poitou against his father. Richard was an important Christian commander during the Third Crusade, leading the campaign after the departure of Philip II of France. Despite achieving several victories against his Muslim counterpart, Saladin, he was ultimately forced to end his campaign without retaking Jerusalem.

The Aquitani were a tribe that lived in the region between the Pyrenees, the Atlantic Ocean, and the Garonne, in present-day southwestern France in the 1st century BC. The Romans dubbed this region Gallia Aquitania. Classical authors such as Julius Caesar and Strabo clearly distinguish the Aquitani from the other peoples of Gaul, and note their similarity to others in the Iberian Peninsula.

Their old language, the Aquitanian language, was a precursor of the Basque language and the substrate for the Gascon language (one of the Romance languages) spoken in Gascony. Between the 1st century and the 13th century, the Aquitani gradually adopted the Gascon language while part of the Roman Empire, then the Duchy of Gascony and the Duchy of Aquitaine.

Edward I (17/18 June 1239 – 7 July 1307), also known as Edward Longshanks and the Hammer of the Scots (Latin: Malleus Scotorum), was King of England from 1272 to 1307. Concurrently, he was Lord of Ireland, and from 1254 to 1306 ruled Gascony as Duke of Aquitaine in his capacity as a vassal of the French king. Before his accession to the throne, he was commonly referred to as the Lord Edward.

The eldest son of Henry III, Edward was involved from an early age in the political intrigues of his father's reign. In 1259, he briefly sided with a baronial reform movement, supporting the Provisions of Oxford. After reconciling with his father, he remained loyal throughout the subsequent armed conflict, known as the Second Barons' War. After the Battle of Lewes, Edward was held hostage by the rebellious barons, but escaped after a few months and defeated the baronial leader Simon de Montfort at the Battle of Evesham in 1265. Within two years, the rebellion was extinguished and, with England pacified, Edward left to join the Ninth Crusade to the Holy Land in 1270. He was on his way home in 1272 when he was informed of his father's death. Making a slow return, he reached England in 1274 and was crowned at Westminster Abbey.

The Spanish March or Hispanic March was a march or military buffer zone established c. 795 by Charlemagne in the eastern Pyrenees and nearby areas, to protect the new territories of the Christian Carolingian Empire—the Duchy of Gascony, the Duchy of Aquitaine, and Septimania—from the Muslim Umayyad Emirate of Córdoba in al-Andalus.

In its broader meaning, the Spanish March sometimes refers to a group of early Iberian and trans-Pyrenean lordships or counts coming under Frankish rule. As time passed, these lordships merged or gained independence from Frankish imperial rule.

Gascony (/ˈɡæskəni/; French: Gascogne [ɡaskɔɲ] ; Occitan: Gasconha [ɡasˈkuɲɔ]) was a province of the southwestern Kingdom of France that succeeded the Duchy of Gascony (602–1453). From the 17th century until the French Revolution (1789–1799), it was part of the combined Province of Guyenne and Gascony. The region is vaguely defined, and the distinction between Guyenne and Gascony is unclear; by some they are seen to overlap, while others consider Gascony a part of Guyenne. Most definitions put Gascony east and south of Bordeaux.

It is currently divided between the region of Nouvelle-Aquitaine (departments of Landes, Pyrénées-Atlantiques, southwestern Gironde, and southern Lot-et-Garonne) and the region of Occitanie (departments of Gers, Hautes-Pyrénées, southwestern Tarn-et-Garonne, and western Haute-Garonne).