County Cavan

Contae an Chabháin

"The county of 365 lakes, ancient kingdom of East Breifne and the O’Reillys."

Estimated Emigrants 115,000+

Peak Migration Eras 1846–1885

Primary US Destinations New York, Boston, Philadelphia

County Cavan Historical Heritage & Diaspora

County Cavan is said to contain 365 lakes—one for every day of the year. Historically representing the Gaelic kingdom of East Breifne, Cavan was ruled for five hundred years by the powerful O’Reilly clan, who minted their own coinage (“Reilly’s coin,” origin of the phrase “living the life of Reilly”).

During the Famine, Cavan suffered catastrophic mortality and eviction. Thousands of families departed on foot for Dublin and Derry. In America, Cavan immigrants became pillars of the construction, transit, and law enforcement sectors in New York and Boston.

Notable Cavan surnames include O’Reilly, Brady, Smith, Lynch, Sheridan, and Farrelly.

Historical Migration Journey

County Cavan Emigration Timeline (1845 – 1920)

1845 – 1852 · The Great Hunger (An Gorta Mór)

Catastrophic Potato Blight & Transatlantic Coffin Ships

Successive failures of the potato crop decimated tenant farming communities. Facing ruthless landlord clearances and starvation, over one million people fled across the Atlantic. Families boarded cramped wooden sailing barques from ports like Cobh, Derry, and Galway, arriving at Boston Harbor and Castle Garden, New York.

1880 – 1900 · The Industrial & Mining Surge

Chain Migration, Coal Valleys, and Urban Labor Solidarity

Younger siblings and children emigrated through prepaid tickets and diaspora remittances sent home from America. Immigrants fueled the industrial expansion of the United States—mining anthracite in Pennsylvania, digging copper in Butte, Montana, and operating textile mills across New England while establishing the first labor unions.

1920s · Independence, Irish Free State & Civic Leadership

War of Independence Remittances and Second-Generation Rise

American diaspora communities raised millions of dollars (via Éamon de Valera's 1919 US tour) to support Irish independence. Second and third-generation Irish-Americans ascended into the heights of US jurisprudence, municipal leadership, journalism, and cultural institutions.