Origin and Meaning of Costello

Noble or Swedish

Origin: Irish - Derived from the Gaelic surname 'Mac Oisdealbhaigh', which translates to means 'son of Oisdealbhach'. The name may also have older origins linked to Swedish roots suggesting nobility.

• Costello is historically an Irish surname and has been associated with nobility in medieval Ireland.
• The name has been used as a given name in recent decades, particularly in English-speaking countries.
• Notable bearers of the name include comedian and actor Lou Costello, who was part of the famous comedy duo Abbott and Costello.
• While traditionally a surname, the name Costello has seen some rise as a first name, demonstrating a trend of using surnames as given names in modern culture.
• Variations of the name may include similar-sounding surnames or related names such as Costell or Costalas, though these are less common.