Costello - Last Names

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Costello

/kəˈstɛloʊ/

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Moderate

Meaning

Descendant of the chief or leader

Represents leadership, ancestral pride, and enduring family legacy within Irish culture.

Symbolism

Embodies strength of heritage, perseverance through historical adversity, and connection to Gaelic nobility.

Etymology: Derived from the Gaelic 'Mac Oisdealbhaigh' meaning 'son of Oisdealbhach,' itself originating from the Old Norse personal name 'Thorsdalfr,' combining 'Thor' (the Norse god) and 'dalfr' (valley). Anglicized as Costello during British rule in Ireland.

Style & Origin

traditional

strong

Cultural Background

Of Irish origin, Costello is an anglicized form of an old Gaelic clan name, historically associated

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