O'Riordain Surname
Approximately 114 people bear this surname
O'Riordain Surname Distribution Map
| Place | Incidence | Frequency | Rank in Area |
|---|---|---|---|
| Ireland | 109 | 1:43,201 | 3,310 |
| England | 5 | 1:11,143,612 | 252,590 |
| Spain | 2 | 1:23,376,018 | 128,922 |
| Austria | 1 | 1:8,515,435 | 118,036 |
| Netherlands | 1 | 1:16,887,176 | 156,465 |
O'Riordain Last Name Facts
Where Does The Last Name O'Riordain Come From? nationality or country of origin
The last name O'Riordain is found most frequently in Ireland. It can also be found as a variant:. For other potential spellings of this name click here.
How Common Is The Last Name O'Riordain? popularity and diffusion
The last name is the 1,710,039th most frequent surname throughout the world, borne by approximately 1 in 63,925,841 people. This last name occurs predominantly in Europe, where 104 percent of O'Riordain are found; 100 percent are found in Northern Europe and 100 percent are found in British Isles.
The surname O'Riordain is most prevalent in Ireland, where it is held by 109 people, or 1 in 43,201. In Ireland it is primarily concentrated in: Leinster, where 52 percent live, Munster, where 41 percent live and Connaught, where 1 percent live. Besides Ireland this surname exists in 4 countries. It is also found in England, where 4 percent live and Spain, where 2 percent live.
Phonetically Similar Names
| Surname | Similarity | Worldwide Incidence | Prevalency |
|---|---|---|---|
| O'Riordan | 95 | 8,158 | / |
| Oriordain | 95 | 2 | / |
| O'Riardain | 90 | 1 | / |
| O'Rioordan | 90 | 1 | / |
| O'Reiordan | 90 | 0 | / |
| Oriordan | 89 | 1,059 | / |
| O'Rirdan | 89 | 1 | / |
| O'Reordan | 84 | 5 | / |
| O'Reirdan | 84 | 3 | / |
| Ooriordan | 84 | 1 | / |
| Oreirdan | 78 | 2 | / |
| Oroirdan | 78 | 2 | / |
| Orierdan | 78 | 0 | / |
| O'Reardan | 74 | 0 | / |
| Oreardan | 67 | 1 | / |
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O'Riordain Reference & Research
O’Riordan FamilyTree DNA Group - A group collating DNA test results for those who bear the surname, includes results of DNA tests and discussions.
O’Riordan FamilyTree DNA Project - A description of a group researching the paternal lines of men who bear the surname with the help of DNA analysis.
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Footnotes
- Surnames are taken as the first part of an person's inherited family name, caste, clan name or in some cases patronymic
- Name distribution statistics are generated from a global database of over 4 billion people - more information
- Heatmap: Dark red means there is a higher occurrence of the name, transitioning to light yellow signifies a progressively lower occurrence. Clicking on selected countries will show mapping at a regional level
- Rank: Name are ranked by incidence using the ordinal ranking method; the name that occurs the most is assigned a rank of 1; name that occur less frequently receive an incremented rank; if two or more name occur the same number of times they are assigned the same rank and successive rank is incremented by the total preceeding names
- Ethnic group cannot necessarily be determined by geographic occurrence
- Similar: Names listed in the "Similar" section are phonetically similar and may not have any relation to O'Riordain
- To find out more about this surname's family history, lookup records on FamilySearch, MyHeritage, FindMyPast and Ancestry. Further information may be obtained by DNA analysis