There are many different types of Irish surnames today, but most commonly, they can be classified into three groups. Find out how surnames are ranked in popularity, how many people in the United States of America bear a particular name, and how the statistics change between 1990 and 2000 US Censuses. How to use the index: Find your Irish surname/county below (be sure to click on “SEE MORE” to see all the surnames mentioned under that alphabet letter). Over four million Irish immigrants moved to the United States between 1820 and 1930 during the great plight of the mid-19 th century, reducing the … The name comes from the Gaelic “O’Ceallaigh”, meaning warrior or fighter. The Table shown here gives a listing of the 100 most commonly names found in Ireland and their meanings. Discover the ethnic origin and meaning of last names. 100 Irish Surnames or Family Names with Meanings. There are numerous Irish surnames you’ll hear in America – just one reason why it has such a rich Irish heritage. Many people think that they can identify an Irish last name simply by an "O'" or a "Mc" at the start of it. I came across this great resource by Barry Griffin on the top Irish surnames in each county.. Mc joined with Mac so McMahon will appear as MacMahon. UNIVERSITY researchers have revealed the origin of more than 45,000 Irish and British surnames in a new dictionary of family names. The Oxford Dictionary of Family Names in Britain and Ireland, released today, is the result of an extensive four-year study by a team from the University of West English (UWE) in Bristol. The Irish surname Kelly is another popular Irish names. Surnames today: There are many different origins for Irish names today but the vast majority can be broken down into either of three categories: Gaelic Irish, Cambro-Norman, and finally Anglo-Irish. Click on that name/county for a list of posts that mentions them. Here is an easy-to-use index of all the Irish surnames and counties mentioned in our various Letters and Blog posts. Here is a curated list of Irish family names along with their meanings: Taken from Edward MacLysaght, Irish Families and More Irish Families. Yes, you read that right. Index to Irish Surnames beginning with S, from Irish Names and Surnames by Rev Patrick Woulfe, 1923 Another meaning is “frequenting Churches” which originates from the Irish word Ceall. For example, since everyone was free to use the name he or she preferred, some families would end up with different last names. 100 most common Irish surnames in each Irish county based on the 1901 census. Irish last names include the Gaelic Irish, Cambro-Norman, and Anglo-Irish. The dancer Gene Kelly was famously proud of his Irish roots. 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