Donnacha
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Meaning
an Irish spelling of Donnchadh
How popular is Donnacha around the world?
Donnacha 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. In Ireland, 86 boys named Donnacha were born in 2025, the 64th most common name among boys that year.
Donnacha is on the official records of Ireland and England and Wales.
United States
under 5 a year
Donnacha 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
1 in 630
In Ireland, 86 boys named Donnacha were born in 2025, the 64th most common name among boys that year.
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
England and Wales
1 in 150,000
In England and Wales, 4 boys named Donnacha were born in 2025, ranked 4,275th among boys that year.
share of that year’s name registrations
Birth registrations in England and Wales (not the whole UK); exact spellings are counted separately, and any spelling under 3 in a year is withheld at source. Source: Office for National Statistics, baby names in England and Wales
South Australia
last on record 2016
Donnacha is not on the 2017 record for South Australia, whose registry publishes every name given that year.
The count never rose above 1 in a year, too few to chart.
Births registered in South Australia (not all of Australia) by first name and year of registration, 1944–2017, from the state’s Births, Deaths and Marriages registry, which publishes every name down to a single birth in capitals; a spelling its export repeats inside a year is counted once, and from 2018 only a top 100 is published, so the series ends at 2017. Source: Consumer and Business Services (South Australia), popular baby names
Not on the record in Spain, Mexico City, Argentina, Puerto Rico, Canada, New Zealand, Scotland and Poland: 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 Austria record for 1984 to 2025: Statistik Austria publishes every first name down to a single birth, so this name was not given there in those years (before 2010 the record covers babies with Austrian citizenship only). Not on Norway’s list: Statistics Norway lists only first names carried by 200 or more living people, so rarer names are not shown.
The Donnacha deep dive
Whether you’re naming a baby or exploring your own name’s history, this is a personal letter, not a list: where Donnacha 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 Donnacha fits with your family’s names and surname.
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