Aideen vs Cailin
Aideen and Cailincompared 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.
Republic of Ireland · Girls
In 2017, Aideen was ranked #341 and Cailin #734 among girls in Republic of Ireland.
Northern Ireland · Girls
In 2018, Aideen was ranked #434 and Cailin #434 among girls in Northern Ireland.
England and Wales · Girls
In 2019, Aideen was ranked #5591 and Cailin #5591 among girls in England and Wales.
Aideen and Cailin over time
Aideen and Cailin appear together in 3 published lists, across 38 years of shared records. Aideen held the stronger position in more years in 2 of them, Cailin in 1.
In none of those lists did their order change and stay changed.
Aideen reached its own highest recorded position earlier in 2 of those lists, Cailin in 1. 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
Republic of Ireland · Girls21 shared years, 1977–2017
Aideen held the stronger position in 21 of those years, Cailin in 0.
Highest recorded here: Aideen #114 in 1989, Cailin #356 in 1996.
The order between them never changed and held in this list.
Most recent shared year, 2017: Aideen #341, Cailin #734.
England and Wales · Girls9 shared years, 1996–2019
Aideen held the stronger position in 1 of those years, Cailin in 6.
Highest recorded here: Aideen #2701 in 1998, Cailin #1934 in 2005.
The order between them never changed and held in this list.
Most recent shared year, 2019: Aideen #5591, Cailin #5591.
Northern Ireland · Girls8 shared years, 1997–2018
Aideen held the stronger position in 4 of those years, Cailin in 0.
Highest recorded here: Aideen #209 in 2002, Cailin #213 in 1998.
The order between them never changed and held in this list.
Most recent shared year, 2018: Aideen #434, Cailin #434.
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 | Aideen | Cailin |
|---|---|---|
| Record type | Official statistical record (evidence-only) | Official statistical record (evidence-only) |
| Gender usage | female | female |
| 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 | GB-ENW, GB-NIR, IE | GB-ENW, GB-NIR, IE |
| Most recent popularity observation | Republic of Ireland · Girls #885 (2025) | England and Wales · Girls #5493 (2020) |
| Pronunciation clarity (demonstration score) | Not yet recorded | Not yet recorded |
| Spelling simplicity (demonstration score) | 88/100 | 88/100 |
| International familiarity (demonstration score) | 100/100 | 100/100 |
| Data Confidence | medium | medium |
What the data shows
- Aideen and Cailin both have 2 syllables.
- Both names have recorded usage in GB-ENW, GB-NIR, IE.
How each name got here
Aideen
Popularity journey
First recorded1964
First recorded at #171 among girls in Republic of Ireland in 1964 — the earliest year that source publishes this name, not necessarily the earliest it was used.
Republic of Ireland · Girls
Highest recorded1964–2025
Highest recorded position: #106 among girls in Republic of Ireland, in 1991 (recorded 1964–2025).
Republic of Ireland · Girls
Most recent2025
Most recently recorded at #885 among girls in Republic of Ireland, in 2025.
Republic of Ireland · Girls
Cailin
Popularity journey
First recorded1977
First recorded at #518 among girls in Republic of Ireland in 1977 — the earliest year that source publishes this name, not necessarily the earliest it was used.
Republic of Ireland · Girls
Highest recorded1997–2018
Highest recorded position: #213 among girls in Northern Ireland, in 1998 (recorded 1997–2018).
Northern Ireland · Girls
Most recent2020
Most recently recorded at #5493 among girls in England and Wales, in 2020.
England and Wales · Girls