There are
3246
Oshaughnessys in the USA
Oshaughnessy is the
9940th
most common last name in the USA

Historical figures and celebrities called Oshaughnessy

JohnO'Shaughnessy

Irish poet and songwriter, known for his contributions to Irish ballads and folk music.

MaryO'Shaughnessy

Renowned mathematician and physicist, recognized for her groundbreaking work in quantum mechanics.

PatrickO'Shaughnessy

Noted historian and author, specializing in medieval European history and the Viking era.

BridgetO'Shaughnessy

Celebrated actress and stage performer, acclaimed for her captivating portrayals in classic plays.

ThomasO'Shaughnessy

Distinguished surgeon and medical researcher, responsible for significant advancements in organ transplantation.

Oshaughnessy Genealogy

OriginsThe surname O'Shaughnessy originated in Ireland.
Geographic DistributionThe O'Shaughnessy surname is commonly associated with County Clare and County Galway in Ireland.
VariationsThe surname may also be spelled as O'Shaughnassy and O'Shaughness.
Migration and ImmigrationMigration and immigration of individuals with the surname O'Shaughnessy occurred during various periods. Significant movements took place during the 19th century, particularly during the Irish diaspora caused by the Great Famine. Many O'Shaughnessy families also emigrated to the United States, Canada, Australia, and other countries in search of better opportunities.