Mainly U.S.: medieval vernacular form of Randolf. This was in common use as a given name into the 17th century and gave rise to a surname. In modern use the given name is often a transferred use of this surname.
English: from the Old French personal name Humfrey, introduced to Britain by the Normans. This is composed of the Germanic elements hūn ‘bear cub’ + frid, fred ‘peace’. It was borne by a 9th-century saint, bishop of Therouanne, who had a certain following in England among Norman settlers.