O'Moriarty Family Name and Heraldry

It is easy to miss O'Moriarty in an index if you only search for Moriarty.

What does the surname O'Moriarty mean?

The name is usually explained as “Sea navigator”.

How is O'Moriarty related to Moriarty?

With its O' prefix, O'Moriarty keeps Moriarty intact and marks descent in the older style. Local scribes, dialects and emigration all left their mark on how the name was written.

Is there an O'Moriarty coat of arms?

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

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