O'Shannon Coat of Arms and Surname Origin

The spelling O'Shannon grew out of Shannon, an Irish surname with a long paper trail.

What is the meaning of O'Shannon?

At root, the name means “Descendant of Seanachán (old, wise)”.

How is O'Shannon related to Shannon?

The O' in front of the name is a particle that was often added to Shannon in records. Regional accents shaped spellings long before dictionaries fixed them.

Is there an O'Shannon coat of arms?

Looking for an O'Shannon coat of arms? Arms were granted to families, not to surnames, and our research shows which heraldic tradition fits yours.

For the full story, order the O'Shannon surname pack.