O'Kearney Last Name: Meaning and Heraldic Roots

O'Kearney is best understood alongside Kearney: both are Irish spellings of a single family name.

What does the surname O'Kearney mean?

Its meaning, shared with Kearney, is “Descendant of Catharnach ("warlike")”.

Is O'Kearney the same name as Kearney?

O'Kearney simply joins the particle O' to Kearney, a habit common in Irish naming. The same family of names includes Carney and Kearny.

Does every O'Kearney family have a crest?

Heraldry is personal: arms associated with the Kearney surname were borne by specific families, and sharing the name does not mean sharing the blazon.

Research your O'Kearney family history with a full surname report and painted coat of arms.