Aaron vs Caoimhin
Aaron and Caoimhincompared on official birth-registration statistics and Namewise's recorded data. This page states what each name's record shows — it never picks a winner or scores one name against the other.
Head to head
Ranks are only compared within one published list and one year. Two ranks from different years, from a boys' and a girls' list, or from different registrars are not comparable, so they are not placed side by side.
England and Wales · Boys
In 2010, Aaron was ranked #55 and Caoimhin #4678 among boys in England and Wales.
Republic of Ireland · Boys
In 2025, Aaron was ranked #71 and Caoimhin #829 among boys in Republic of Ireland.
Northern Ireland · Boys
In 2024, Aaron was ranked #187 and Caoimhin #118 among boys in Northern Ireland.
Aaron and Caoimhin over time
Aaron and Caoimhin appear together in 2 published lists, across 59 years of shared records. Aaron held the stronger position in more years in 2 of them, Caoimhin in 0.
The order between them changed and held in 2 of those lists — a change in that published list, never a claim that one name displaced the other.
Each reached its own highest recorded position first in 1 of the lists they share.
Counted list by list. Two names in the same published list are measured on the same scale in the same year, so those comparisons are real — but positions from different lists are not, so nothing here is combined into an overall standing.
How this pair is related
The relationship kinds these two qualify for, each under its own stated rule. Every one is drawn from a list they both appear in.
- One moved ahead of the other
In 2023, Caoimhin moved ahead of Aaron in Northern Ireland · Boys — #131 and #147 the year before became #161 and #139.
- Longest-running competitions
Aaron and Caoimhin were both ranked in Republic of Ireland · Boys for 31 years, from 1965 to 2025, ending at #71 and #829.
- Peaked in the same years
Both reached their highest recorded position in Republic of Ireland · Boys within 2 years — Aaron #6 in 1998, Caoimhin #200 in 1996.
List by list
Republic of Ireland · Boys31 shared years, 1965–2025
Aaron held the stronger position in 30 of those years, Caoimhin in 0.
Highest recorded here: Aaron #6 in 1998, Caoimhin #200 in 1996.
The order changed in 1979: Aaron moved ahead. In 1978 they stood at #222 and #222; by 1979 that had become #104 and #269.
Most recent shared year, 2025: Aaron #71, Caoimhin #829.
Northern Ireland · Boys28 shared years, 1997–2024
Aaron held the stronger position in 25 of those years, Caoimhin in 2.
Highest recorded here: Aaron #8 in 2000, Caoimhin #99 in 2021.
The order changed in 2023: Caoimhin moved ahead. In 2022 they stood at #131 and #147; by 2023 that had become #161 and #139.
Most recent shared year, 2024: Aaron #187, Caoimhin #118.
Two names moving past each other in a ranking is a fact about the ranking. Namewise does not claim one name displaced the other, that families chose between them, or that either influenced the other — none of that is in this data.
Side by side
| Field | Aaron | Caoimhin |
|---|---|---|
| Record type | Editorially researched profile | Official statistical record (evidence-only) |
| Gender usage | male | male |
| Meaning | Best known as the name of Moses's elder brother and the first high priest of Israel in the Old Testament; the literal meaning of the name itself is not reliably established. | Not yet recorded |
| Origin | Biblical Hebrew (likely of Egyptian origin) | Not yet recorded |
| Pronunciation | /ˈɛrən/ | Not yet recorded |
| Syllables | 2 | 2 |
| Common variants / nicknames | Not yet recorded | Not yet recorded |
| Recorded regional usage | AU-NSW, GB-ENW, GB-NIR, GB-SCT, IE, NO, NZ | GB-ENW, GB-NIR, IE |
| Most recent popularity observation | Republic of Ireland · Boys #71 (2025) | Republic of Ireland · Boys #829 (2025) |
| Pronunciation clarity (demonstration score) | 90/100 | Not yet recorded |
| Spelling simplicity (demonstration score) | 94/100 | 76/100 |
| International familiarity (demonstration score) | 100/100 | 100/100 |
| Data Confidence | medium | medium |
What the data shows
- Aaron has a recorded origin (Biblical Hebrew (likely of Egyptian origin)); Caoimhin does not have one recorded yet.
- Aaron and Caoimhin both have 2 syllables.
- A meaning is recorded for Aaron; Caoimhin doesn't have one written yet.
- Both names have recorded usage in GB-ENW, GB-NIR, IE.
How each name got here
Aaron
Popularity journey
First recorded1965
First recorded at #222 among boys in Republic of Ireland in 1965 — the earliest year that source publishes this name, not necessarily the earliest it was used.
Republic of Ireland · Boys
Highest recorded1965–2025
Highest recorded position: #6 among boys in Republic of Ireland, in 1998 (recorded 1965–2025).
Republic of Ireland · Boys
Most recent2025
Most recently recorded at #180 among boys in England and Wales, in 2025.
England and Wales · Boys
Caoimhin
Popularity journey
First recorded1965
First recorded at #222 among boys in Republic of Ireland in 1965 — the earliest year that source publishes this name, not necessarily the earliest it was used.
Republic of Ireland · Boys
Highest recorded1997–2024
Highest recorded position: #99 among boys in Northern Ireland, in 2021 (recorded 1997–2024).
Northern Ireland · Boys
Most recent2025
Most recently recorded at #829 among boys in Republic of Ireland, in 2025.
Republic of Ireland · Boys