Old French

Old French was a diverse group of Romance dialects spoken in northern France. It existed roughly from the late 8th century until the mid-14th century. Rather than being a single, unified language, it consisted of several varieties known as the *langues d'oïl*. These dialects were mutually intelligible, meaning speakers could generally understand one another. This group of dialects stood in contrast to the Occitano-Romance languages spoken in southern France. Old French served as a vital linguistic bridge between the ancient past and the modern era.

The development of Old French began with the evolution of Vulgar Latin. Vulgar Latin was the common spoken language used across the Western Roman Empire. While Classical Latin was used for formal writing, Vulgar Latin was the language of daily life. By the 7th century, Classical Latin had largely ceased to be a spoken language. It became a language that people had to learn as a second language. As Vulgar Latin evolved in different regions, it eventually branched into the various Romance languages we recognize today.

Specific historical events and people helped shape the unique sound of Old French. During the Carolingian Renaissance in the late 8th century, a scholar named Alcuin was tasked by Charlemagne to improve Latin writing. Alcuin prescribed a pronunciation based on a literal interpretation of Latin spelling. For example, a word like *causa* had to be read exactly as it was spelled. This change made Latin sermons difficult for the general public to understand. Consequently, the Third Council of Tours in 813 instructed priests to speak in "plain Roman[ce] speech" to ensure people understood them.

Two major cultural groups influenced the sounds and vocabulary of this evolving language. First, the Gaulish people left a lasting mark through a "substrate," or a linguistic layer. They contributed many words, such as *caballus*, which replaced the classical Latin word for horse. Gaulish influence also caused specific sound shifts, such as changing the Latin consonant clusters /ps/ and /pt/ into new sounds. Second, the Franks settled in the region around the 530s. They spoke Old Frankish, a Germanic language. This contact introduced a Germanic stress accent, which changed how vowels were pronounced and caused certain syllables to fall away.

Old French was not a single tongue but a collection of distinct regional dialects. The Norman dialect was spoken in Normandy, with major cities like Caen and Rouen. When the Normans conquered England, they brought their version of the language with them. This created Anglo-Norman, a language that shared culture across the English Channel. Other important dialects included Picard, spoken in cities like Lille and Arras, and Burgundian, spoken in the duchy of Burgundy. There was also Walloon, spoken around Namur in modern-day Belgium, and Gallo, spoken in Brittany.

The reach of Old French extended far beyond the borders of northern France. It was spoken in the northern half of the Kingdom of France and its various vassals. The influence of the language spread to England and the Crusader states. During the Crusades, Old French was used in the Kingdom of Sicily and the Levant. It served as a language of commerce and the feudal elite in many distant lands. Even in English law, a version called "Law French" was used by lawyers until the reign of Charles II.

The legacy of Old French is visible in many modern languages and words. The dialect from the Île-de-France region eventually became the basis for Modern French. Other dialects evolved into regional languages like Jèrriais, Guernésiais, and Walloon. Many English words, such as "cavalry" and "chivalry," trace their roots back to Old French forms. The language demonstrates how the meeting of different cultures—Latin, Gaulish, and Germanic—can create something entirely new and enduring.