Show ContentsTiernan History, Family Crest & Coats of Arms

The original Gaelic versions of today's Irish names demonstrate a proud, ancient past. The original Gaelic form of the name Tiernan is Mac Tighearnain, which is derived from the word tighearna, which means "lord."

Early Origins of the Tiernan family

The surname Tiernan was first found in County Cavan, at Tullyhunco where the "Annals of the Four Masters" show no fewer than 33 Tiernans. Almost all were Chiefs of Teallach Donnchadha. Despite their high ranking, their exploits were not well documented from 1250-1550. One must presume that they ruled with compassion and understanding and were amiable to their fellow man. The "Mac" prefix of the name is typically spelt "MacTernan" or "McTernan" and is usually found in the Cavan-Leitrim area of Ireland.

Ternan or Terrenan (d. 431?), was Archbishop of the Picts. "According to his legend he went to Rome, where he spent seven years under the care of the pope, was appointed archbishop of the Picts, and returned to Scotland with the usual accompaniment of miraculous adventures. He died and was buried at Banchory on the river Dee, which was named from him Banchory Ternan. His day in the calendar is 12 June, and the years given for his death vary from 431 to 455. " [1]

Early History of the Tiernan family

This web page shows only a small excerpt of our Tiernan research. Another 40 words (3 lines of text) covering the year 1800 is included under the topic Early Tiernan History in all our PDF Extended History products and printed products wherever possible.

Tiernan Spelling Variations

People who were accounted for by scribes and church officials often had their name recorded many different ways because pronunciation was the only guide those scribes and church officials had to go by. This resulted in the problem of one person's name being recorded under several different variations, creating the illusion of more than one person. Among the many spelling variations of the surname Tiernan that are preserved in archival documents are Tiernan, Tierman, Ternan, Kiernan and others.

Early Notables of the Tiernan family

More information is included under the topic Early Tiernan Notables in all our PDF Extended History products and printed products wherever possible.

Tiernan Ranking

In the United States, the name Tiernan is the 14,734th most popular surname with an estimated 2,487 people with that name. [2]


United States Tiernan migration to the United States +

Death and immigration greatly reduced Ireland's population in the 19th century. For the native Irish people poverty, hunger, and racial prejudice was common. Therefore, thousands left their homeland to seek opportunity in North America. Those who survived the journey and the quarantine camps to which they arrived, were instrumental towards building the strong developing nations of the United States and the future Canada. By far, the largest influx of Irish settlers occurred with Great Potato Famine during the late 1840s. These were employed as construction or factory workers. An examination of passenger and immigration lists has shown early immigrants bearing the name Tiernan:

Tiernan Settlers in United States in the 19th Century
  • Catherine Tiernan, who arrived in Newport, Rhode Island in 1811 [3]
  • Patrick Tiernan, aged 26, who arrived in Maryland in 1812 [3]
  • Luke Tiernan, who landed in New York in 1822 [3]
  • John Tiernan, who settled in Philadelphia in 1845
  • Patrick Tiernan, who settled in Philadelphia in 1846
  • ... (More are available in all our PDF Extended History products and printed products wherever possible.)

Australia Tiernan migration to Australia +

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

Tiernan Settlers in Australia in the 19th Century
  • Mr. Domonick Tiernan, (Domonik), (b. 1813), aged 31, Irish farm labourer who was convicted in Roscommon, Ireland for 14 years for rioting, transported aboard the "Cadet" on 9th April 1844, arriving in Tasmania (Van Diemen's Land) [4]
  • Mr. Edward Tiernan, (b. 1820), aged 24, Irish ploughman who was convicted in Roscommon, Ireland for 14 years for rioting, transported aboard the "Cadet" on 9th April 1844, arriving in Tasmania (Van Diemen's Land) [4]
  • Mr. Michael Tiernan, (b. 1811), aged 33, Irish farm labourer who was convicted in Leitrim, Ireland for 15 years for stealing, transported aboard the "Cadet" on 9th April 1844, arriving in Tasmania (Van Diemen's Land), he died in 1869 [4]
  • Mr. Patrick Tiernan, (b. 1824), aged 20, Irish farm labourer who was convicted in Roscommon, Ireland for life for rioting, transported aboard the "Cadet" on 9th April 1844, arriving in Tasmania (Van Diemen's Land), he died in 1844 [4]
  • Mr. Patrick Tiernan, (b. 1815), aged 30, Irish farm labourer who was convicted in Meath, Ireland for 7 years for stealing, transported aboard the "Elizabeth and Henry" on 15th February 1845, arriving in Tasmania (Van Diemen's Land) [5]

New Zealand Tiernan 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:

Tiernan Settlers in New Zealand in the 19th Century
  • Christopher Tiernan, aged 30, a miner, who arrived in Auckland, New Zealand aboard the ship "Resolute" in 1865
  • Mary Ann Tiernan, aged 26, who arrived in Auckland, New Zealand aboard the ship "Resolute" in 1865
  • Ellen Tiernan, aged 18 mths., who arrived in Auckland, New Zealand aboard the ship "Resolute" in 1865
  • Catherine Tiernan, aged 18 mths., who arrived in Auckland, New Zealand aboard the ship "Resolute" in 1865
  • Miss Ann Tiernan, British domestic servant travelling from Greenock aboard the ship "Nelson" arriving in Port Chalmers, Dunedin, Otago, South Island, New Zealand on 31st December 1874 [6]
  • ... (More are available in all our PDF Extended History products and printed products wherever possible.)

Contemporary Notables of the name Tiernan (post 1700) +

  • Michael Joseph "Silent Mike" Tiernan (1867-1918), American Major League Baseball right fielder
  • Cate Tiernan (b. 1961), American writer
  • Tommy Tiernan (b. 1969), Irish comedian, actor and writer, best known for co-starring on the radio's The Tommy and Hector Show
  • Patrick Tiernan (b. 1994), Australian runner, winner of the 2012, Gold Coast Marathon
  • Andrew James Tiernan (b. 1965), English actor from Birmingham, Warwickshire
  • Fergus Tiernan (b. 1982), Scottish former football midfielder from Helensburgh
  • Robert Tiernan, Lawyer and Congressman of Providence, RI
  • David Tiernan Disney (1803-1857), American Democratic Party politician, U.S. Representative from Ohio 1st District, 1849-55 [7]
  • Tiernan O'Halloran (b. 1991), Irish professional rugby union player


  1. Smith, George (ed), Dictionary of National Biography. London: Smith, Elder & Co., 1885-1900. Print
  2. "What are the 5,000 Most Common Last Names in the U.S.?". NameCensus.com, https://namecensus.com/last-names/
  3. 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)
  4. Convict Records Voyages to Australia (Retrieved 17th November 2020). Retrieved from https://convictrecords.com.au/ships/cadet/
  5. Convict Records Voyages to Australia (Retrieved 11th March 2022). Retrieved from https://convictrecords.com.au/ships/elizabeth-and-henry
  6. New Zealand Yesteryears Passenger Lists 1800 to 1900 (Retrieved 17th October 2018). Retrieved from http://www.yesteryears.co.nz/shipping/passlist.html
  7. The Political Graveyard: Alphabetical Name Index. (Retrieved 2016, January 25) . Retrieved from http://politicalgraveyard.com/alpha/index.html


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