Jeffrey is a common English given name and a medieval variant of Geoffrey. In America, Jeffrey has been more common than Geoffrey, though this is not true in Britain, where Geoffrey remains the preferred spelling. The name Geoffrey derives from a Norman French form of a Frankish name, ultimately from Germanic elements. The second element is Old German fridu "peace", while the first element could be *gautaz "Geat" (a North Germanic tribe), gawi "territory", or walah "foreigner". It is likely that two or more names merged into a single form. In the later Middle Ages, Geoffrey was further confused with the distinct name Godfrey. Outside of North America, Geoffrey is more common than Jeffrey. Historical Context The Normans introduced this name to England, where it became common among the nobility. Famous medieval literary bearers include the 12th-century chronicler Geoffrey of Monmouth and the 14th-century poet Geoffrey Chaucer, writer of The Canterbury Tales. By the end of the Middle Ages, the name had become uncommon, but it was revived in the 20th century, often in the spelling Jeffrey. The variant Jeffrey has been particularly popular in the United States since the mid-20th century, ranking among the top 50 names for boys for several decades. Related Forms Variants of Jeffrey include Jeffery, Jeffry, Geffrey, and Geofrey. Diminutives include Geoff, Jeff, and Jep. The surname Jefferson is a patronymic form meaning "son of Jeffrey", and other surnames such as Jeffers and Jeffries derive from the same root. Cognate forms in other languages include Jofre (Catalan), Godfried (Dutch), Geoffroy (French), Godefroy (French), Joffrey (French), and Geoffrey (French). Distribution and Cultural Significance As a given name, Jeffrey has been widely used in English-speaking countries, particularly in the United States and Australia. The name's popularity surged in the mid-20th century but has declined since the 1990s. Notable bearers include American actors Jeffrey Tambor and Jeff Bridges, filmmaker Jeff Goldblum, and musician Jeff Buckley. The name's association with Jeffrey Dahmer may have contributed to its decline in recent years. Meaning: "Divine peace" or "Territorial peace", with roots in Germanic elements. Origin: Medieval French variant of Geoffrey, introduced to England by the Normans. Type: Variant form of Geoffrey, confused with Godfrey in the Middle Ages. Usage Regions: Predominantly English-speaking world; more common in the US than in Britain.