Ailsa vs Cassidy
Ailsa and Cassidycompared 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 · Girls
In 2024, Ailsa was ranked #148 and Cassidy #384 among girls in Scotland.
Northern Ireland · Girls
In 2008, Ailsa was ranked #439 and Cassidy #370 among girls in Northern Ireland.
England and Wales · Girls
In 2024, Ailsa was ranked #1894 and Cassidy #776 among girls in England and Wales.
Ailsa and Cassidy over time
Ailsa and Cassidy appear together in 1 published list, across 29 years of shared records. Cassidy held the stronger position in more years in 1 of them, Ailsa 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.
Ailsa reached its own highest recorded position earlier in 1 of those lists, and Cassidy 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 · Girls29 shared years, 1996–2024
Ailsa held the stronger position in 4 of those years, Cassidy in 25.
Highest recorded here: Ailsa #619 in 1998, Cassidy #580 in 2006.
The order changed in 2000: Cassidy moved ahead. In 1999 they stood at #653 and #816; by 2000 that had become #764 and #625.
Most recent shared year, 2024: Ailsa #1894, Cassidy #776.
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 | Ailsa | Cassidy |
|---|---|---|
| Record type | Official statistical record (evidence-only) | Official statistical record (evidence-only) |
| Gender usage | female | Used for both boys and girls |
| Meaning | Not yet recorded | Not yet recorded |
| Origin | Not yet recorded | Not yet recorded |
| Pronunciation | Not yet recorded | Not yet recorded |
| Syllables | 2 | 3 |
| Common variants / nicknames | Not yet recorded | Not yet recorded |
| Recorded regional usage | GB-ENW, GB-NIR, GB-SCT, IE | GB-ENW, GB-NIR, GB-SCT, IE |
| Most recent popularity observation | Scotland · Girls #148 (2024) | Republic of Ireland · Girls #718 (2025) |
| 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
- Ailsa has 2 syllables, compared with 3 for Cassidy.
- Both names have recorded usage in GB-ENW, GB-NIR, GB-SCT, IE.
How each name got here
Ailsa
Popularity journey
First recorded1996
First recorded at #686 among girls in England and Wales in 1996 — the earliest year that source publishes this name, not necessarily the earliest it was used.
England and Wales · Girls
Most recent2024
Most recently recorded at #1894 among girls in England and Wales, in 2024.
England and Wales · Girls
Cassidy
Popularity journey
First recorded1996
First recorded at #1168 among girls in England and Wales in 1996 — the earliest year that source publishes this name, not necessarily the earliest it was used.
England and Wales · Girls
Highest recorded2005–2024
Highest recorded position: #370 among girls in Northern Ireland, in 2008 (recorded 2005–2024).
Northern Ireland · Girls
Most recent2025
Most recently recorded at #718 among girls in Republic of Ireland, in 2025.
Republic of Ireland · Girls