Show ContentsReily History, Family Crest & Coats of Arms

The Reily surname originally appeared in Gaelic as Ó Raghailligh, which means descendant of Raghallach.

Early Origins of the Reily family

The surname Reily was first found in County Cavan. They were known as the Princes of East Breffny, descended from Raghallaigh, Prince of Breffny in 981. They maintained their territory during the Anglo/Norman invasion of Strongbow, Earl of Pembroke, in 1172, but Sir John O'Reilly, Prince of Breffny surrendered the principality to Queen Elizabeth I thereby ensuring that his territories remained intact.

Early History of the Reily family

This web page shows only a small excerpt of our Reily research. Another 95 words (7 lines of text) covering the years 1598, 1630, 1640, 1646, 1667, 1669, 1689, 1691, 1695 and 1703 are included under the topic Early Reily History in all our PDF Extended History products and printed products wherever possible.

Reily Spelling Variations

Within the archives researched, many different spelling variations of the surname Reily were found. These included One reason for the many variations is that scribes and church officials often spelled an individual's name as it sounded. This imprecise method often led to many versions. O'Reilly, O'Reilley, O'Reily, O'Rielly, O'Riely, O'Riley, O'Rilley, Reel and many more.

Early Notables of the Reily family

Notable amongst the family name at this time was

  • Count John O'Reilly; Edmund O'Reilly (1598-1669), Roman Catholic Archbishop of Armagh; Hugh Reily (Reilly or O’Reilly) (c.1630-1695) Irish Member of Parliament for Cavan Borough in the Patriot Parliam...

Reily Ranking

In the United States, the name Reily is the 17,590th most popular surname with an estimated 2,487 people with that name. 1


United States Reily migration to the United States +

The 19th century saw a great wave of Irish families leaving Ireland for the distant shores of North America and Australia. These families often left their homeland hungry, penniless, and destitute due to the policies of England. Those Irish immigrants that survived the long sea passage initially settled on the eastern seaboard of the continent. Some, however, moved north to a then infant Canada as United Empire Loyalists after ironically serving with the English in the American War of Independence. Others that remained in America later joined the westward migration in search of land. The greatest influx of Irish immigrants, though, came to North America during the Great Potato Famine of the late 1840s. Thousands left Ireland at this time for North America, and those who arrived were immediately put to work building railroads, coal mines, bridges, and canals. In fact, the foundations of today's powerful nations of the United States and Canada were to a larger degree built by the Irish. Archival documents indicate that members of the Reily family relocated to North American shores quite early:

Reily Settlers in United States in the 17th Century
  • Anth Reily, who arrived in Virginia in 1663 2
Reily Settlers in United States in the 18th Century
  • Owen Reily, who landed in Philadelphia, Pennsylvania in 1746 2
Reily Settlers in United States in the 19th Century
  • James Reily, aged 36, who landed in New York in 1812 2
  • Thomas Reily, aged 32, who arrived in New York in 1812 2
  • Philip Reily, who landed in Philadelphia, Pennsylvania in 1815 2
  • Edward Reily, who arrived in Allegany (Allegheny) County, Pennsylvania in 1829 2
  • John Reily, who arrived in Allegany (Allegheny) County, Pennsylvania in 1844 2
  • ... (More are available in all our PDF Extended History products and printed products wherever possible.)
Reily Settlers in United States in the 20th Century
  • Patrick Reily, who arrived in Wisconsin in 1919 2

Canada Reily migration to Canada +

Some of the first settlers of this family name were:

Reily Settlers in Canada in the 18th Century
  • Sgt. John Reily U.E. who settled in Home District [York County], Ontario c. 1786 he served in Butlers Rangers, married with five children 3
Reily Settlers in Canada in the 19th Century
  • Judith Reily, who landed in Nova Scotia in 1819
  • William Reily and his wife settled in Prescott Ontario with six children in 1825
  • Dennis Reily, aged 30, who arrived in Saint John, New Brunswick in 1833 aboard the brig "Thomas Hanford" from Cork, Ireland
  • Jane Reily, aged 19, who arrived in Saint John, New Brunswick in 1833 aboard the ship "John & Mary" from Belfast, Ireland
  • Hugh Reily, aged 17, who arrived in Saint John, New Brunswick in 1833 aboard the ship "Britannia" from Sligo, Ireland
  • ... (More are available in all our PDF Extended History products and printed products wherever possible.)

Australia Reily migration to Australia +

Emigration to Australia followed the First Fleets of convicts, tradespeople and early settlers. Early immigrants include:

Reily Settlers in Australia in the 19th Century
  • Mr. Robert Reily, (Reilly), (b. 1813), aged 18, Irish carter who was convicted in Ireland for 14 years for stealing, transported aboard the "Captain Cook" on 5th November 1831, arriving in New South Wales, Australia 4
  • Ann Reily, aged 26, a domestic servant, who arrived in South Australia in 1856 aboard the ship "Nimroud"

New Zealand Reily migration to New Zealand +

Emigration to New Zealand followed in the footsteps of the European explorers, such as Captain Cook (1769-70): first came sealers, whalers, missionaries, and traders. By 1838, the British New Zealand Company had begun buying land from the Maori tribes, and selling it to settlers, and, after the Treaty of Waitangi in 1840, many British families set out on the arduous six month journey from Britain to Aotearoa to start a new life. Early immigrants include:

Reily Settlers in New Zealand in the 19th Century
  • Mr. John Reily, (b. 1841), aged 33, Irish shoe maker from Tipperary travelling from London aboard the ship "Tweed" arriving in Port Chalmers, Dunedin, Otago, South Island, New Zealand on 4th September 1874 5

Contemporary Notables of the name Reily (post 1700) +

  • Luther Reily (1794-1854), American Democratic Party politician, U.S. Representative from Pennsylvania 10th District, 1837-39 6
  • James Reily (1811-1863), American politician, U.S. Consul in SAINT Petersburg, 1856 6
  • Emmet Montgomery Reily (b. 1866), American Republican politician, Governor of Puerto Rico, 1921-23 6
  • Daniel Reily, American politician, Delegate to Illinois State Constitutional Convention from Randolph County; Elected 1861; Resigned 1861 6


  1. "What are the 5,000 Most Common Last Names in the U.S.?". NameCensus.com, https://namecensus.com/last-names/
  2. Filby, P. William, Meyer, Mary K., Passenger and immigration lists index : a guide to published arrival records of about 500,000 passengers who came to the United States and Canada in the seventeenth, eighteenth, and nineteenth centuries. 1982-1985 Cumulated Supplements in Four Volumes Detroit, Mich. : Gale Research Co., 1985, Print (ISBN 0-8103-1795-8)
  3. Rubincam, Milton. The Old United Empire Loyalists List. Genealogical Publishing Co., Inc, 1976. (Originally published as; United Empire Loyalists. The Centennial of the Settlement of Upper Canada. Rose Publishing Company, 1885.) ISBN 0-8063-0331-X
  4. Convict Records Voyages to Australia (Retrieved 17th December 2020). Retrieved from https://convictrecords.com.au/ships/captain-cook
  5. New Zealand Yesteryears Passenger Lists 1800 to 1900 (Retrieved 26th March 2019). Retrieved from http://www.yesteryears.co.nz/shipping/passlist.html
  6. The Political Graveyard: Alphabetical Name Index. (Retrieved 2015, December 8) . Retrieved from http://politicalgraveyard.com/alpha/index.html


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