Warren

Warren derives from a Norman French surname, itself from the Germanic element warin, meaning guard or protector, brought to England after the Norman Conquest of 1066. The de Warenne family were among the most powerful Norman nobles in medieval England, which helped establish the name's presence in the English-speaking world. Its transition from surname to given name followed a common English pattern, and it has been in steady use as a first name since the nineteenth century. Warin and Guarin are older continental forms related to the same Germanic root.