Calum vs Tiarnán
Calum and Tiarnáncompared 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 · Boys
In 2025, Calum was ranked #432 and Tiarnán #252 among boys in Republic of Ireland.
Calum and Tiarnán over time
Calum and Tiarnán appear together in 1 published list, across 8 years of shared records. Calum held the stronger position in more years in 1 of them, Tiarnán 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.
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 · Boys8 shared years, 2018–2025
Calum held the stronger position in 5 of those years, Tiarnán in 3.
Highest recorded here: Calum #195 in 2018, Tiarnán #239 in 2018.
The order changed in 2025: Tiarnán moved ahead. In 2024 they stood at #520 and #582; by 2025 that had become #432 and #252.
Most recent shared year, 2025: Calum #432, Tiarnán #252.
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 Calum
Pairs where Calum shares a published list with another name, each measured inside one registrar's own list.
- Rory vs Calum
In 1996 they stood at #93 and #91 in England and Wales · Boys, 2 places apart; by 2025 they were #17 and #3256.
Rory · Calum · 30 shared years, 1996–2025 · Started together, ended far apart
- Harrison vs Calum
In 1996 they stood at #86 and #91 in England and Wales · Boys, 5 places apart; by 2025 they were #50 and #3256.
Harrison · Calum · 30 shared years, 1996–2025 · Started together, ended far apart
- Ethan vs Calum
In 1996 they stood at #92 and #91 in England and Wales · Boys, 1 places apart; by 2025 they were #54 and #3256.
Ethan · Calum · 30 shared years, 1996–2025 · Started together, ended far apart
- Calum vs Marcus
In 1996 they stood at #91 and #85 in England and Wales · Boys, 6 places apart; by 2025 they were #3256 and #267.
Calum · Marcus · 30 shared years, 1996–2025 · Started together, ended far apart
Side by side
| Field | Calum | Tiarnán |
|---|---|---|
| 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 | 1 |
| Common variants / nicknames | Not yet recorded | Not yet recorded |
| Recorded regional usage | GB-ENW, GB-NIR, GB-SCT, IE | IE |
| Most recent popularity observation | Republic of Ireland · Boys #432 (2025) | Republic of Ireland · Boys #252 (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 | 40/100 |
| Data Confidence | medium | medium |
What the data shows
- Calum has 2 syllables, compared with 1 for Tiarnán.
- Both names have recorded usage in IE.
How each name got here
Calum
Popularity journey
First recorded1992
First recorded at #298 among boys in Republic of Ireland in 1992 — the earliest year that source publishes this name, not necessarily the earliest it was used.
Republic of Ireland · Boys
Highest recorded1997–2024
Highest recorded position: #21 among boys in Northern Ireland, in 2006 (recorded 1997–2024).
Northern Ireland · Boys
Most recent2025
Most recently recorded at #3256 among boys in England and Wales, in 2025.
England and Wales · Boys
Tiarnán
Popularity journey
First recorded2018
First recorded at #239 among boys in Republic of Ireland in 2018 — the earliest year that source publishes this name, not necessarily the earliest it was used.
Republic of Ireland · Boys
Highest recorded2018–2025
Highest recorded position: #239 among boys in Republic of Ireland, in 2018 (recorded 2018–2025).
Republic of Ireland · Boys
Most recent2025
Most recently recorded at #252 among boys in Republic of Ireland, in 2025.
Republic of Ireland · Boys