Reginald is an English name of Old German origin, derived from "Hrathigisl", meaning "strong counsel" or "wise pledge". Introduced to England by the Normans after 1066, it was popular among the aristocracy and has historical significance, including Saint Reginald of Montbard, a Knights Templar Grand Master. Today, despite its past popularity, it is less common but still conveys images of strength, wisdom, and nobility.