Caoilfhionn
Meaning
from Old Irish cáel, "slender", and finn, "white or blessed"; borne by several Irish saints
How popular is Caoilfhionn around the world?
Caoilfhionn does not appear in US Social Security baby-name records, which list only names given to at least five babies in a year. There is no popularity curve to chart: a genuinely rare pick. Caoilfhionn is not on the 2025 record for Ireland, where names under 3 in a year are withheld at source.
United States
under 5 a year
Caoilfhionn does not appear in US Social Security baby-name records, which list only names given to at least five babies in a year. There is no popularity curve to chart: a genuinely rare pick.
Births with a Social Security record. Source: U.S. Social Security Administration
Ireland
last on record 2024
Caoilfhionn is not on the 2025 record for Ireland, where names under 3 in a year are withheld at source.
share of that year’s name registrations
Exact registered spellings from Irish vital statistics; any name under 3 in a year is withheld at source, and accented spellings (fadas) are recorded reliably only from 2018. Source: Central Statistics Office (Ireland), Irish babies' names
Not on the record in Spain, Mexico City, Argentina, Puerto Rico, England and Wales, Canada, New Zealand and Scotland: those registries withhold small counts, so rare uses may sit below their floors.
Not on the Chile record: nametree keeps spellings that reached 5 registrations in some year, so rarer uses are not shown. Not on the Montevideo record for 1940 to 2011: that registry withholds nothing, so this spelling was not given there in those years. Not on the France record: nametree keeps spellings that reached 20 births in some year, so rarer uses are not shown. Not on the South Australia record for 1944 to 2017: that registry withholds nothing, so this spelling was not given there in those years.
Keep exploring
The Caoilfhionn deep dive
Whether you’re naming a baby or exploring your own name’s history, this is a personal letter, not a list: where Caoilfhionn truly comes from, how it traveled, and what a century of records reveals. If you have grown a tree on nametree, it also considers how Caoilfhionn fits with your family’s names and surname.
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