Arlo vs Iarlaith
Arlo and Iarlaithcompared 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.
Northern Ireland · Boys
In 2024, Arlo was ranked #45 and Iarlaith #136 among boys in Northern Ireland.
Republic of Ireland · Boys
In 2025, Arlo was ranked #54 and Iarlaith #85 among boys in Republic of Ireland.
Arlo and Iarlaith over time
Arlo and Iarlaith appear together in 2 published lists, across 25 years of shared records. Neither was ahead in more lists than the other.
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.
Arlo reached its own highest recorded position earlier in 2 of those lists, and Iarlaith 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.
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.
- One moved ahead of the other
In 2018, Arlo moved ahead of Iarlaith in Republic of Ireland · Boys — #220 and #203 the year before became #111 and #177.
- Peaked in the same years
Both reached their highest recorded position in Republic of Ireland · Boys within 2 years — Arlo #48 in 2024, Iarlaith #85 in 2025.
List by list
Republic of Ireland · Boys17 shared years, 2009–2025
Arlo held the stronger position in 8 of those years, Iarlaith in 9.
Highest recorded here: Arlo #48 in 2024, Iarlaith #85 in 2025.
The order changed in 2018: Arlo moved ahead. In 2017 they stood at #220 and #203; by 2018 that had become #111 and #177.
Most recent shared year, 2025: Arlo #54, Iarlaith #85.
Northern Ireland · Boys8 shared years, 2015–2024
Arlo held the stronger position in 8 of those years, Iarlaith in 0.
Highest recorded here: Arlo #40 in 2023, Iarlaith #136 in 2024.
The order between them never changed and held in this list.
Most recent shared year, 2024: Arlo #45, Iarlaith #136.
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.
Where to go next
Comparisons that share a name, a rule or a published list with this one. Each is an existing comparison page with its own evidence — nothing here says these pairs are alike.
Other comparisons involving Arlo
Pairs where Arlo shares a published list with another name, each measured inside one registrar's own list.
- Arthur vs Arlo
Arthur and Arlo both rose over the same years in 4 registrars — England and Wales · Boys; New Zealand · Boys; Northern Ireland · Boys; Republic of Ireland · Boys. Each list is measured against its own starting position; the positions are never combined.
Arthur · Arlo · 27 shared years, 1999–2025 · Moved together in several countries
- Theo vs Arlo
Theo and Arlo both rose over the same years in 4 registrars — England and Wales · Boys; New Zealand · Boys; Northern Ireland · Boys; Republic of Ireland · Boys. Each list is measured against its own starting position; the positions are never combined.
Theo · Arlo · 27 shared years, 1999–2025 · Moved together in several countries
- Arlo vs Ezra
Arlo and Ezra both rose over the same years in 3 registrars — England and Wales · Boys; New Zealand · Boys; Northern Ireland · Boys. Each list is measured against its own starting position; the positions are never combined.
Arlo · Ezra · 27 shared years, 1999–2025 · Moved together in several countries
- Arlo vs Freddie
Arlo and Freddie both rose over the same years in 3 registrars — England and Wales · Boys; Northern Ireland · Boys; Republic of Ireland · Boys. Each list is measured against its own starting position; the positions are never combined.
Arlo · Freddie · 27 shared years, 1999–2025 · Moved together in several countries
Side by side
| Field | Arlo | Iarlaith |
|---|---|---|
| Record type | Editorially researched profile | Official statistical record (evidence-only) |
| Gender usage | male | male |
| Meaning | Meaning uncertain — likely derived by Edmund Spenser from the real Irish place name Aherlow ('between two highlands') for the fictional Arlo Hill in The Faerie Queene (1590). | Not yet recorded |
| Origin | Irish (place name origin, via literary adaptation) | Not yet recorded |
| Pronunciation | /ˈɑɹ.loʊ/ | 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, NZ | GB-NIR, IE |
| Most recent popularity observation | England and Wales · Boys #15 (2025) | Republic of Ireland · Boys #85 (2025) |
| Pronunciation clarity (demonstration score) | 90/100 | Not yet recorded |
| Spelling simplicity (demonstration score) | 95/100 | 76/100 |
| International familiarity (demonstration score) | 100/100 | 60/100 |
| Data Confidence | medium | medium |
What the data shows
- Arlo has a recorded origin (Irish (place name origin, via literary adaptation)); Iarlaith does not have one recorded yet.
- Arlo and Iarlaith both have 2 syllables.
- A meaning is recorded for Arlo; Iarlaith doesn't have one written yet.
- Both names have recorded usage in GB-NIR, IE.
How each name got here
Arlo
Popularity journey
First recorded1999
First recorded at #2943 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 recorded2013–2023
Highest recorded position: #10 among boys in New Zealand, in 2017 (recorded 2013–2023).
New Zealand · Boys
Most recent2025
Most recently recorded at #3035 among girls in England and Wales, in 2025.
England and Wales · Girls
Iarlaith
Popularity journey
First recorded1991
First recorded at #324 among boys in Republic of Ireland in 1991 — the earliest year that source publishes this name, not necessarily the earliest it was used.
Republic of Ireland · Boys
Highest recorded1991–2025
Highest recorded position: #85 among boys in Republic of Ireland, in 2025 (recorded 1991–2025).
Republic of Ireland · Boys
Most recent2025
Most recently recorded at #85 among boys in Republic of Ireland, in 2025.
Republic of Ireland · Boys