Summary

The surname Riordan is of Irish origin, derived from the Irish Gaelic name O'Riordain. It is believed to have originated from the word "rioghbhardan", meaning "royal bard" or "bishop's poet." The Riordan family has a rich history dating back many centuries, with notable members making contributions in various fields such as literature, politics, and the arts.
There are
7848
Riordans in the USA
Riordan is the
4515th
most common last name in the USA

Historical figures and celebrities called Riordan

BrianRiordan

Irish-American politician and businessman. He served as the mayor of Hartford, Connecticut from 1947 to 1948 and later became the president of the Aetna Life Insurance Company.

JohnRiordan

American labor leader. He was the founding president of the Plumbing Trades Employees Union and played a significant role in improving the working conditions of plumbers.

NiallRiordan

Irish poet and writer. He is known for his thought-provoking and introspective poems, exploring themes of identity, love, and spirituality.

KathleenRiordan

Australian actress. She appeared in several acclaimed theatre productions and gained recognition for her versatile performances in both comedic and dramatic roles.

PatrickRiordan

Irish historian and author. He specialized in ancient Irish history and published several influential books on Celtic culture and mythology.

Riordan Genealogy

OriginsThe surname Riordan has Irish origins.
Geographic DistributionRiordan is commonly found in Ireland, the United States, Australia, and other countries with Irish diaspora communities.
VariationsVariations of the surname Riordan include O'Riordan and Reardon.
Migration and ImmigrationMigration and immigration of the Riordan surname occurred during various periods, particularly during the Irish diaspora in the 19th century. Many Riordan families emigrated from Ireland to countries like the United States, Canada, Australia, and the United Kingdom due to economic challenges and the Great Famine.