Costello

Meaning and origin

The last name Costello has origins in Ireland, specifically among the Gaelic population. Over time, the spelling and pronunciation changed, and the name Costello emerged. Today, Costello can be found as a surname in various countries, particularly in Ireland and among Irish diaspora communities around the world.

The longer story

The surname Costello can be traced back to its origins in Ireland. The name is of Gaelic origin, derived from the Gaelic word "Mac Oisdealbhaigh," meaning "son of Oisdealbhach." This Gaelic personal name is composed of the elements "os," meaning "deer," and "dealbhach," meaning "like." Therefore, the name Costello can be interpreted as "son of the deer-like one."

The Costello surname is primarily associated with the western region of Ireland, particularly in County Mayo and County Galway. Over time, individuals bearing the name Costello migrated to other parts of Ireland and later emigrated to different parts of the world, including the United States.

Upon arrival in the United States, many Costellos settled in cities such as New York, Boston, and Chicago. They contributed to the cultural fabric of their new home and played roles in different sectors, including politics, law, business, and entertainment.

Surname origins are rarely settled: one spelling can have several sources, and families often took a name for reasons nobody wrote down. Check it against the sources below before you rely on it.