The name Elmon is a variant of the Germanic name Agilmund, which means "battle-protection" or "protecting warrior." It originated in the 5th century AD among the Frankish and Alemannic tribes of present-day Germany and France. The name is composed of two Old High German elements: "agil" meaning "battle" or "sword," and "mund" meaning "protection" or "guardian."

Elmon was a relatively common name during the Middle Ages, especially in the Frankish kingdoms and the Holy Roman Empire. It appears in several medieval chronicles and records, such as the Annales Fuldenses, a 9th-century chronicle of the Frankish kingdom. One notable historical figure with this name was Elmon of Würzburg, a Frankish nobleman who lived in the late 9th century and served as a count under King Arnulf of Carinthia.

In the 11th century, Elmon of Blois (1020-1092) was a French nobleman and courtier who held lands in the County of Blois and served as a trusted advisor to several kings of France. Another notable Elmon was Elmon of Tournai (1145-1211), a Flemish priest and chronicler who wrote extensively about the history of the County of Flanders.

During the Renaissance period, Elmon Gissler (1487-1553) was a German humanist scholar and theologian who taught at the University of Ingolstadt and was a close friend of the reformer Philip Melanchthon. In the 17th century, Elmon van Lodensteyn (1601-1677) was a Dutch Golden Age painter known for his portraits and historical scenes.

One of the most famous individuals with the name Elmon was Elmon Maltbie Wright (1840-1903), an American educator and clergyman who served as the fourth president of Middlebury College in Vermont. He was a prominent figure in the field of higher education and a respected author on religious and philosophical topics.

While the name Elmon fell out of widespread use in more recent centuries, it remains a historically significant name with roots in the Germanic languages and a connection to the medieval period in Europe.