Haydn vs Leo
Haydn and Leocompared 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, Haydn was ranked #2443 and Leo #5 among boys in England and Wales.
Republic of Ireland · Boys
In 2016, Haydn was ranked #713 and Leo #44 among boys in Republic of Ireland.
Northern Ireland · Boys
In 2007, Haydn was ranked #357 and Leo #89 among boys in Northern Ireland.
Haydn and Leo over time
Haydn and Leo appear together in 1 published list, across 29 years of shared records. Leo held the stronger position in more years in 1 of them, Haydn in 0.
In none of those lists did their order change and stay changed.
Haydn reached its own highest recorded position earlier in 1 of those lists, and Leo 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 · Boys29 shared years, 1996–2024
Haydn held the stronger position in 0 of those years, Leo in 29.
Highest recorded here: Haydn #215 in 1996, Leo #5 in 2022.
The order between them never changed and held in this list.
Most recent shared year, 2024: Haydn #2443, Leo #5.
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 | Haydn | Leo |
|---|---|---|
| Record type | Official statistical record (evidence-only) | Editorially researched profile |
| Gender usage | male | male |
| Meaning | Not yet recorded | Lion. |
| Origin | Not yet recorded | Latin |
| Pronunciation | Not yet recorded | /ˈliːoʊ/ |
| Syllables | 1 | 1 |
| Common variants / nicknames | Not yet recorded | Not yet recorded |
| Recorded regional usage | GB-ENW, GB-NIR, IE | AU-NSW, GB-ENW, GB-NIR, GB-SCT, IE, NO, NZ |
| Most recent popularity observation | England and Wales · Boys #2443 (2024) | New South Wales, Australia · Boys #5 (2025) |
| Pronunciation clarity (demonstration score) | Not yet recorded | 90/100 |
| Spelling simplicity (demonstration score) | 94/100 | 95/100 |
| International familiarity (demonstration score) | 100/100 | 100/100 |
| Data Confidence | medium | medium |
What the data shows
- Leo has a recorded origin (Latin); Haydn does not have one recorded yet.
- Haydn and Leo both have 1 syllable.
- A meaning is recorded for Leo; Haydn doesn't have one written yet.
- Both names have recorded usage in GB-ENW, GB-NIR, IE.
How each name got here
Haydn
Popularity journey
First recorded1996
First recorded at #215 among boys in England and Wales in 1996 — the earliest year that source publishes this name, not necessarily the earliest it was used.
England and Wales · Boys
Highest recorded1996–2024
Highest recorded position: #215 among boys in England and Wales, in 1996 (recorded 1996–2024).
England and Wales · Boys
Most recent2024
Most recently recorded at #2443 among boys in England and Wales, in 2024.
England and Wales · Boys
Leo
Popularity journey
First recorded1947
First recorded at #303 among boys in Norway in 1947 — the earliest year that source publishes this name, not necessarily the earliest it was used.
Norway · Boys
Highest recorded2009–2025
Highest recorded position: #3 among boys in New South Wales, Australia, in 2022 (recorded 2009–2025).
New South Wales, Australia · Boys
Most recent2025
Most recently recorded at #5 among boys in New South Wales, Australia, in 2025.
New South Wales, Australia · Boys