By: History.com Editors

St. Patrick’s Day

9 Surprising Facts About St. Patrick’s Day

Who was the real St. Patrick? Was that legend about the snakes true? And why did so many St. Patrick's Day traditions start in America?

History.com Editors

Surprising Facts about St. Patrick's Day

Published: January 20, 2025

Last Updated: February 07, 2025

While St. Patrick’s Day is now associated with wearing green, parades (when they're not canceled) and beer, the holiday is grounded in history that dates back more than 1,500 years. The earliest known celebrations were held in the 17th century on March 17, marking the anniversary of the death of St. Patrick in the 5th century. Learn more about the holiday’s history and how it evolved into the event it is today.

1.

The Real St. Patrick Was Born in Britain

Much of what is known about St. Patrick's life has been interwoven with folklore and legend. Historians generally believe that St. Patrick, the patron saint of Ireland, was born in Britain (not Ireland) near the end of the 4th century. At age 16 he was kidnapped by Irish raiders and sold as a slave to a Celtic priest in the area now known as Northern Ireland. After toiling for six years as a shepherd, he escaped back to Britain. He eventually returned to Ireland as a Christian missionary.

The History of St. Patrick’s Day

Distinguish St. Patrick's Day myths from reality and find out why this holiday is celebrated by millions of Irish people around the world.

2.

Scientists were worried about space germs infecting Earth.

After risking their lives for the advancement of humanity, Armstrong, Aldrin and Collins had the dubious pleasure of being stuck in planetary protection quarantine on their return. Since humans had never been to the moon before, NASA scientists couldn’t be sure that some deadly space-borne plague hadn’t hitched a ride on the astronauts.

As soon as their re-entry capsule splashed down in the Pacific Ocean on July 24, the trio was transferred to a mobile quarantine facility inside which they were transported to NASA Lunar Receiving Laboratory at Johnson Space Center where they had access to a larger quarantine facility until their release on August 10, 1969.

P_resident Richard Nixon speaking with Apollo 11 crew members Neil Armstrong, Michael Collins and Buzz Aldrin who were subjected to a period of quarantine upon their return to Earth._

MPI/Getty Images

3.

There Were No Snakes Around for St. Patrick to Banish from Ireland

Among the legends associated with St. Patrick is that he stood atop an Irish hillside and banished snakes from Ireland—prompting all serpents to slither away into the sea. Snakes, as a Biblical reference, generally connote evil. But, if the legend is to be taken literally, research suggests snakes in fact never occupied the Emerald Isle in the first place. There are no signs of snakes in the country’s fossil record. And water has surrounded Ireland since the last glacial period. Before that, the region was covered in ice and would have been too cold for the reptiles.

4.

Leprechauns Are Likely Based on Celtic Fairies

The red-haired, green-clothed Leprechaun is commonly associated with St. Patrick’s Day. The original Irish name for these figures of folklore is “lobaircin,” meaning “small-bodied fellow.” Belief in leprechauns likely stems from Celtic belief in fairies— tiny men and women who could use their magical powers to serve good or evil. In Celtic folktales, leprechauns were cranky souls, responsible for mending the shoes of the other fairies.

Are Leprechauns Real?

The mythological beings known as "leprechauns" have appeared for centuries in Irish folklore. The pot of gold didn't come until much later.

5.

The Shamrock Was Considered a Sacred Plant

The shamrock, a three-leaf clover, has been associated with Ireland for centuries. It was called the “seamroy” by the Celts and was considered a sacred plant that symbolized the arrival of spring. According to legend, St. Patrick used the plant as a visual guide when explaining the Holy Trinity. By the 17th century, the shamrock had become a symbol of emerging Irish nationalism.

Are Shamrocks Really Lucky?

Why are shamrocks associated with St. Patrick's Day? The real history of this little green plant is steeped in religion, heritage, and Irish national pride.

6.

Scientists were worried about space germs infecting Earth.

After risking their lives for the advancement of humanity, Armstrong, Aldrin and Collins had the dubious pleasure of being stuck in planetary protection quarantine on their return. Since humans had never been to the moon before, NASA scientists couldn’t be sure that some deadly space-borne plague hadn’t hitched a ride on the astronauts.

As soon as their re-entry capsule splashed down in the Pacific Ocean on July 24, the trio was transferred to a mobile quarantine facility inside which they were transported to NASA Lunar Receiving Laboratory at Johnson Space Center where they had access to a larger quarantine facility until their release on August 10, 1969.

P_resident Richard Nixon speaking with Apollo 11 crew members Neil Armstrong, Michael Collins and Buzz Aldrin who were subjected to a period of quarantine upon their return to Earth._

MPI/Getty Images

7.

The First St. Patrick’s Day Parade Was Held in America

While people in Ireland had celebrated St. Patrick since the 1600s, the tradition of a St. Patrick’s Day parade began in America and actually predates the founding of the United States.

Records show that a St. Patrick’s Day parade was held on March 17, 1601, in a Spanish colony in what is now St. Augustine, Florida. The parade and a St. Patrick’s Day celebration a year earlier were organized by the Spanish Colony's Irish vicar Ricardo Artur. More than a century later, homesick Irish soldiers serving in the English military marched in Boston in 1737 and in New York City on March 17. Enthusiasm for the St. Patrick’s Day parades in New York City, Boston and other early American cities only grew from there. In 2020 and 2021, parades throughout the country, including in New York City and Boston, were canceled or postponed for the first time in decades due to the outbreak of the COVID-19 virus. They returned in 2022.

8.

The Irish Were Once Scorned in America

While Irish Americans are now proud to showcase their heritage, the Irish were not always celebrated by fellow Americans. Beginning in 1845, a devastating potato blight caused widespread hunger throughout Ireland. While approximately 1 million perished, another 2 million abandoned their land in the largest-single population movement of the 19th century. Most of the exiles—nearly a quarter of the Irish nation—came to the shores of the United States. Once they arrived, the Irish refugees were looked down upon as disease-ridden, unskilled and a drain on welfare budgets.

Why America Loves/Hated the Irish

Today, Irish traditions are seamlessly embedded in American culture. But once upon a time, the American people rejected—even hated—those immigrating from the Emerald Isle.

9.

Corned Beef and Cabbage Was an American Innovation

The meal that became a St. Patrick’s Day staple across the country—corned beef and cabbage—was an American innovation. While ham and cabbage were eaten in Ireland, corned beef offered a cheaper substitute for impoverished immigrants. Irish Americans living in the slums of lower Manhattan in the late 19th century and early 20th purchased leftover corned beef from ships returning from the tea trade in China. The Irish would boil the beef three times—the last time with cabbage—to remove some of the brine.

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Citation Information

Article title
9 Surprising Facts About St. Patrick’s Day
Website Name
History
Date Accessed
February 15, 2025
Publisher
A&E Television Networks
Last Updated
February 07, 2025
Original Published Date
March 07, 2024