O'Hearn Coat of Arms and Surname Origin

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

Family name meaning

Spelling was not fixed until the modern era, so Ahern could easily become O'Hearn. The name is generally explained as “Descendant of Eachthighearna ("lord of horses")”.

Before spelling was fixed, Ahern was also written O'Hearn. Spellings drifted because names were written down by ear in parish books, tax rolls and passenger lists. You may also find the name written Ahearn and Aherne. The 2010 census count for O'Hearn in the United States was 2,728, good for rank 11,529. That is enough to place it in the top 25,000 American surnames.

Want more than a summary? See the O'Hearn family name pack.