Show ContentsManahan History, Family Crest & Coats of Arms

The original Gaelic form of the Irish name Manahan was written as Ó Mainchin, which is derived from the word manach, which means monk.

Early Origins of the Manahan family

The surname Manahan was first found in County Cork (Irish: Corcaigh) the ancient Kingdom of Deis Muin (Desmond), located on the southwest coast of Ireland in the province of Munster.

Early History of the Manahan family

This web page shows only a small excerpt of our Manahan research. Another 94 words (7 lines of text) covering the year 1172 is included under the topic Early Manahan History in all our PDF Extended History products and printed products wherever possible.

Manahan Spelling Variations

Names during the Middle Ages were often recorded under several different spelling variations during the life of their bearers. Literacy was rare at that time and so how a person's name was recorded was decided by the individual scribe. Variations of the name Manahan include Mannix, Managan, Managhan, Manahan, Manihan, O'Managhan, O'Manihan, Mangan and many more.

Early Notables of the Manahan family

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

Manahan Ranking

In the United States, the name Manahan is the 10,462nd most popular surname with an estimated 2,487 people with that name. 1


United States Manahan migration to the United States +

The 19th century saw a great wave of Irish migrating out of their homeland in a great measure due to the oppressive imperial policies of the English government and landowners. Many of these Irish families sailed to North America aboard overcrowded passenger ships. By far, the largest influx of Irish immigrants to North America occurred with Great Potato Famine during the late 1840s. These particular immigrants were instrumental in creation of the United States and Canada as major industrial nations because the many essential elements such as the roadways, canals, bridges, and railways required an enormous quantity of cheap labor, which these poor immigrants provided. Later generations of Irish in these countries also went on to make valuable contributions in such fields as the arts, commerce, politics, and education. Extensive research into immigration and passenger lists has revealed many early immigrants bearing the name Manahan:

Manahan Settlers in United States in the 17th Century
  • William Manahan, who landed in Virginia in 1654 2
Manahan Settlers in United States in the 19th Century
  • James Manahan, aged 24, who landed in New York in 1812 2
  • Patrick Manahan, aged 37, who landed in New York in 1812 2
  • Daniel and Patrick Manahan, who arrived in Philadelphia, PA between 1842 and 1859
  • Anthony Manahan, aged 20, who arrived in New York, NY in 1849 2
  • A Manahan, who landed in San Francisco, California in 1851 2
  • ... (More are available in all our PDF Extended History products and printed products wherever possible.)

Canada Manahan migration to Canada +

Some of the first settlers of this family name were:

Manahan Settlers in Canada in the 19th Century
  • Antony Manahan, who settled in Quebec in 1849

Contemporary Notables of the name Manahan (post 1700) +

  • Dr. Ronald E. Manahan (1977-1986), American academic, 5th President of Grace College and Theological Seminary, Winona Lake, Indiana
  • Robert L. Manahan (1956-2000), American voice actor
  • Donal Thomas Manahan (b. 1953), Irish-born, American marine scientist, known for Antarctic and deep oceanic research on marine invertebrates and their larvae in extreme environments, eponym of Manahan Peak, Antarctica
  • James Manahan (1866-1932), American politician, U.S. Representative from Minnesota (1913-1915)
  • William Lawrence "Larry" Manahan, American politician, former member of the Ohio House of Representatives (1979-1992)
  • James Edward Manahan (b. 1897), American Democratic Party politician, Member of Vermont State House of Representatives, 1939-44; U.S. Collector of Customs, 1945-51; Mayor of St. Albans, Vermont, 1946 3
  • James Manahan, American Republican politician, Alternate Delegate to Republican National Convention from Minnesota, 1972 3
  • James Manahan (1866-1932), American Republican politician, U.S. Representative from Minnesota at-large, 1913-15 3
  • G. Hal Manahan (b. 1886), American Republican politician, Gas and oil dealer; Chair of Elkhart County Republican Party, 1942-44 3
  • Anna Maria Manahan (1924-2009), Irish stage, film and television actress
  • ... (Another 4 notables are available in all our PDF Extended History products and printed products wherever possible.)


  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. The Political Graveyard: Alphabetical Name Index. (Retrieved 2015, October 8) . Retrieved from http://politicalgraveyard.com/alpha/index.html


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