Show ContentsMonahon History, Family Crest & Coats of Arms

Many variations of the name Monahon have evolved since the time of its initial creation. In Gaelic it appeared as Ó Manachain, which is derived from the word "manach," which means "monk." 1

Early Origins of the Monahon family

The surname Monahon was first found in County Roscommon (Irish: Ros Comáin) located in central Ireland in the province of Connacht, where they held a family seat from ancient times.

Early History of the Monahon family

This web page shows only a small excerpt of our Monahon research. Another 109 words (8 lines of text) covering the year 1798 is included under the topic Early Monahon History in all our PDF Extended History products and printed products wherever possible.

Monahon 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 Monahon that are preserved in archival documents are Monaghan, Monahan, Monagham, Monahon, Monagan, Mongan, Monaugher, Monck and many more.

Early Notables of the Monahon family

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


United States Monahon 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 Monahon:

Monahon Settlers in United States in the 19th Century
  • James Monahon, aged 32, who landed in New York in 1854 2
  • Mary Monahon, aged 25, who arrived in New York in 1854 2


  1. MacLysaght, Edward, The Surnames of Ireland. Ireland: Irish Academic Press, sixth edition, 1985. Print. (ISBN 0-7165-2366-3)
  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)


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