Aiden vs Cailean
Aiden and Caileancompared 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.
Scotland · Boys
In 2024, Aiden was ranked #135 and Cailean #478 among boys in Scotland.
England and Wales · Boys
In 2024, Aiden was ranked #145 and Cailean #4270 among boys in England and Wales.
Republic of Ireland · Boys
In 2013, Aiden was ranked #219 and Cailean #711 among boys in Republic of Ireland.
Northern Ireland · Boys
In 2022, Aiden was ranked #285 and Cailean #414 among boys in Northern Ireland.
Aiden and Cailean over time
Aiden and Cailean appear together in 3 published lists, across 32 years of shared records. Aiden held the stronger position in more years in 3 of them, Cailean in 0.
The order between them changed and held in one of those lists — a change in that published list, never a claim that one name displaced the other.
Cailean reached its own highest recorded position earlier in 3 of those lists, and Aiden in none. Each position is a place inside its own list, so this compares when they peaked and never how high.
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.
List by list
England and Wales · Boys14 shared years, 1996–2024
Aiden held the stronger position in 14 of those years, Cailean in 0.
Highest recorded here: Aiden #66 in 2010, Cailean #1850 in 1999.
The order between them never changed and held in this list.
Most recent shared year, 2024: Aiden #145, Cailean #4270.
Northern Ireland · Boys9 shared years, 1998–2022
Aiden held the stronger position in 6 of those years, Cailean in 1.
Highest recorded here: Aiden #186 in 2012, Cailean #243 in 2001.
The order changed in 2008: Aiden moved ahead. In 2007 they stood at #357 and #357; by 2008 that had become #187 and #291.
Most recent shared year, 2022: Aiden #285, Cailean #414.
Republic of Ireland · Boys9 shared years, 1993–2013
Aiden held the stronger position in 9 of those years, Cailean in 0.
Highest recorded here: Aiden #196 in 2011, Cailean #275 in 1993.
The order between them never changed and held in this list.
Most recent shared year, 2013: Aiden #219, Cailean #711.
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 | Aiden | Cailean |
|---|---|---|
| Record type | Official statistical record (evidence-only) | Official statistical record (evidence-only) |
| Gender usage | male | male |
| Meaning | Not yet recorded | Not yet recorded |
| Origin | Not yet recorded | Not yet recorded |
| Pronunciation | Not yet recorded | 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, GB-SCT, IE |
| Most recent popularity observation | Republic of Ireland · Boys #149 (2025) | Scotland · Boys #478 (2024) |
| Pronunciation clarity (demonstration score) | Not yet recorded | Not yet recorded |
| Spelling simplicity (demonstration score) | 94/100 | 82/100 |
| International familiarity (demonstration score) | 100/100 | 100/100 |
| Data Confidence | medium | medium |
What the data shows
- Aiden and Cailean both have 2 syllables.
- Both names have recorded usage in GB-ENW, GB-NIR, GB-SCT, IE.
How each name got here
Aiden
Popularity journey
First recorded1964
First recorded at #94 among boys in Republic of Ireland in 1964 — the earliest year that source publishes this name, not necessarily the earliest it was used.
Republic of Ireland · Boys
Highest recorded1999–2024
Highest recorded position: #33 among boys in New South Wales, Australia, in 2010 (recorded 1999–2024).
New South Wales, Australia · Boys
Most recent2025
Most recently recorded at #301 among boys in Norway, in 2025.
Norway · Boys
Cailean
Popularity journey
First recorded1993
First recorded at #275 among boys in Republic of Ireland in 1993 — the earliest year that source publishes this name, not necessarily the earliest it was used.
Republic of Ireland · Boys
Highest recorded1998–2022
Highest recorded position: #243 among boys in Northern Ireland, in 2001 (recorded 1998–2022).
Northern Ireland · Boys
Most recent2024
Most recently recorded at #4270 among boys in England and Wales, in 2024.
England and Wales · Boys