As an English name, Benjamin came into general use after the Protestant Reformation. A famous bearer was Benjamin Franklin (1706-1790), an American statesman, inventor, scientist and philosopher.
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 it had become uncommon, but it was revived in the 20th century, often in the spelling Jeffrey.