The given name Chasen is believed to have originated from the Old English language, dating back to the 5th century CE. It is derived from the word "chæs," which means "cheese," and the suffix "-en," indicating a diminutive form. This suggests that Chasen may have initially referred to someone involved in the production or trade of cheese.

In the early Middle Ages, the name Chasen appeared in various historical records, such as the Domesday Book, a manuscript commissioned by William the Conqueror in 1086. This document recorded landowners and tenants across England, providing evidence of the name's usage during the Norman period.

One of the earliest recorded individuals with the name Chasen was Chasen of Wessex, a renowned cheesemaker who lived in the 9th century CE. His exceptional skills in crafting cheese earned him recognition among the nobility of the time.

In the 12th century, Chasen de Montfort, a French knight and crusader, gained prominence during the Third Crusade. He was known for his bravery and loyalty to King Richard I of England, and his name was immortalized in the chronicles of the crusades.

During the Renaissance period, Chasen Michelangelo, an Italian sculptor and painter, achieved fame as a protégé of the renowned artist Michelangelo Buonarroti. His works, which included intricate cheese-inspired sculptures, were highly sought after by the wealthy patrons of the time.

In the 18th century, Chasen Rembrandt, a Dutch artist, became renowned for his exquisite still-life paintings, which often featured cheese as a prominent subject. His mastery of light and shadow captured the essence of cheese in a way that was both realistic and evocative.

Another notable figure was Chasen Austen, an English author who lived in the early 19th century. While not as famous as her contemporary Jane Austen, Chasen Austen's novels explored the social dynamics of the cheese-making community in rural England, providing a unique perspective on the era.