Show ContentsTonn History, Family Crest & Coats of Arms

Throughout history, very few Irish surnames have exclusively maintained their original forms. Before being translated into English, Tonn appeared as Ó Tomhrair. The surname Tonn is derived from the Norse forename Tomar, which was the name of a Scandinavian king of Dublin during the 10th century. Nevertheless, the Tonn family is distinctly Gaelic. It was common practice for Irish men who married women of Norse stock to baptize their children by a Norse name.

Early Origins of the Tonn family

The surname Tonn was first found in Derry, where they were anciently descended from the Cenel Eoghain (the Clann Owen) which had held lands in Tyrone and Derry for over a thousand years.

Early History of the Tonn family

This web page shows only a small excerpt of our Tonn research. Another 98 words (7 lines of text) are included under the topic Early Tonn History in all our PDF Extended History products and printed products wherever possible.

Tonn Spelling Variations

The Middle Ages saw a great number of spelling variations for surnames common to the Irish landscape. One reason for these variations is the fact that surnames were not rigidly fixed by this period because the general population had to rely on local official's understanding of how their name should be spelt, hence spellings in records often changed through a person's lifetime. The following variations for the name Tonn were encountered in the archives: Toner,Tonry and others.

Early Notables of the Tonn family

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

Tonn Ranking

In the United States, the name Tonn is the 14,733rd most popular surname with an estimated 2,487 people with that name. 1

Migration of the Tonn family

Ireland became inhospitable for many native Irish families in the 19th centuries. Poverty, lack of opportunities, high rents, and discrimination forced thousands to leave the island for North America. The largest exodus of Irish settlers occurred with the Great Potato Famine of the late 1840s. For these immigrants the journey to British North America and the United States was long and dangerous and many did not live to see the shores of those new lands. Those who did make it were essential to the development of what would become two of the wealthiest and most powerful nations of the world. These Irish immigrants were not only important for peopling the new settlements and cities, they also provided the manpower needed for the many industrial and agricultural projects so essential to these growing nations. Immigration and passenger lists have documented the arrival of various people bearing the name Tonn to North America: Arthur Toner, who was naturalized in Westmoreland County, Pennsylvania in 1810; Bryant Toner, who was listed as a British Alien in the United States during the War of 1812.



  1. "What are the 5,000 Most Common Last Names in the U.S.?". NameCensus.com, https://namecensus.com/last-names/


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