Aaron vs Cosimo
Aaron and Cosimocompared 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 2024, Aaron was ranked #154 and Cosimo #4270 among boys in England and Wales.
Aaron and Cosimo over time
Aaron and Cosimo appear together in 1 published list, across 18 years of shared records. Aaron held the stronger position in more years in 1 of them, Cosimo in 0.
In none of those lists did their order change and stay changed.
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.
- Peaked in the same years
Both reached their highest recorded position in England and Wales · Boys within 2 years — Aaron #36 in 1999, Cosimo #1850 in 1999.
List by list
England and Wales · Boys18 shared years, 1999–2024
Aaron held the stronger position in 18 of those years, Cosimo in 0.
Highest recorded here: Aaron #36 in 1999, Cosimo #1850 in 1999.
The order between them never changed and held in this list.
Most recent shared year, 2024: Aaron #154, Cosimo #4270.
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 | Cosimo |
|---|---|---|
| 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 | 3 |
| 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 |
| Most recent popularity observation | Republic of Ireland · Boys #71 (2025) | England and Wales · Boys #4270 (2024) |
| Pronunciation clarity (demonstration score) | 90/100 | Not yet recorded |
| Spelling simplicity (demonstration score) | 94/100 | 88/100 |
| International familiarity (demonstration score) | 100/100 | 40/100 |
| Data Confidence | medium | medium |
What the data shows
- Aaron has a recorded origin (Biblical Hebrew (likely of Egyptian origin)); Cosimo does not have one recorded yet.
- Aaron has 2 syllables, compared with 3 for Cosimo.
- A meaning is recorded for Aaron; Cosimo doesn't have one written yet.
- Both names have recorded usage in GB-ENW.
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 #334 among boys in Norway, in 2025.
Norway · Boys
Cosimo
Popularity journey
First recorded1999
First recorded at #1850 among boys in England and Wales in 1999 — the earliest year that source publishes this name, not necessarily the earliest it was used.
England and Wales · Boys
Highest recorded1999–2024
Highest recorded position: #1850 among boys in England and Wales, in 1999 (recorded 1999–2024).
England and Wales · Boys
Most recent2024
Most recently recorded at #4270 among boys in England and Wales, in 2024.
England and Wales · Boys