Callan vs Theodore
Callan and Theodorecompared 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, Callan was ranked #847 and Theodore #8 among boys in England and Wales.
Northern Ireland · Boys
In 2024, Callan was ranked #187 and Theodore #32 among boys in Northern Ireland.
Scotland · Boys
In 2024, Callan was ranked #36 and Theodore #36 among boys in Scotland.
Republic of Ireland · Boys
In 2025, Callan was ranked #262 and Theodore #44 among boys in Republic of Ireland.
Callan and Theodore over time
Callan and Theodore appear together in 3 published lists, across 63 years of shared records. Theodore held the stronger position in more years in 3 of them, Callan in 0.
In none of those lists did their order change and stay changed.
Callan reached its own highest recorded position earlier in 1 of those lists, and Theodore 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.
- Repeatedly exchanged positions
Callan and Theodore changed places 6 times in Republic of Ireland · Boys between 1998 and 2025, ending at #262 and #44.
- Mirrored each other
Over 29 shared years in England and Wales · Boys, Theodore rose about as far as Callan fell — from #419 and #209 in 1996 to #847 and #8 in 2024.
- Peaked in the same years
Both reached their highest recorded position in Northern Ireland · Boys within 2 years — Callan #187 in 2024, Theodore #32 in 2024.
List by list
England and Wales · Boys29 shared years, 1996–2024
Callan held the stronger position in 0 of those years, Theodore in 29.
Highest recorded here: Callan #296 in 1998, Theodore #8 in 2022.
The order between them never changed and held in this list.
Most recent shared year, 2024: Callan #847, Theodore #8.
Republic of Ireland · Boys24 shared years, 1998–2025
Callan held the stronger position in 7 of those years, Theodore in 16.
Highest recorded here: Callan #262 in 2025, Theodore #44 in 2025.
The order between them never changed and held in this list.
Most recent shared year, 2025: Callan #262, Theodore #44.
Northern Ireland · Boys10 shared years, 2005–2024
Callan held the stronger position in 0 of those years, Theodore in 8.
Highest recorded here: Callan #187 in 2024, Theodore #32 in 2024.
The order between them never changed and held in this list.
Most recent shared year, 2024: Callan #187, Theodore #32.
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 | Callan | Theodore |
|---|---|---|
| Record type | Official statistical record (evidence-only) | Editorially researched profile |
| Gender usage | male | male |
| Meaning | Not yet recorded | Gift of God. |
| Origin | Not yet recorded | Greek |
| Pronunciation | Not yet recorded | /ˈθiəˌdɔɹ/ |
| Syllables | 2 | 3 |
| Common variants / nicknames | Not yet recorded | Teddy |
| Recorded regional usage | GB-ENW, GB-NIR, GB-SCT, IE | AU-NSW, GB-ENW, GB-NIR, GB-SCT, IE, NZ |
| Most recent popularity observation | Republic of Ireland · Boys #262 (2025) | New South Wales, Australia · Boys #3 (2025) |
| Pronunciation clarity (demonstration score) | Not yet recorded | 90/100 |
| Spelling simplicity (demonstration score) | 88/100 | 76/100 |
| International familiarity (demonstration score) | 100/100 | 100/100 |
| Data Confidence | medium | high |
What the data shows
- Theodore has a recorded origin (Greek); Callan does not have one recorded yet.
- Callan has 2 syllables, compared with 3 for Theodore.
- A meaning is recorded for Theodore; Callan doesn't have one written yet.
- Both names have recorded usage in GB-ENW, GB-NIR, GB-SCT, IE.
- The available evidence gives Callan a "medium" Data Confidence level and Theodore a "high" level — this reflects how complete and corroborated the underlying evidence is, not a judgement of either name.
How each name got here
Callan
Popularity journey
First recorded1996
First recorded at #3126 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 recent2025
Most recently recorded at #262 among boys in Republic of Ireland, in 2025.
Republic of Ireland · Boys
Theodore
Popularity journey
First recorded1964
First recorded at #214 among boys in Republic of Ireland in 1964 — the earliest year that source publishes this name, not necessarily the earliest it was used.
Republic of Ireland · Boys
Highest recorded2015–2025
Highest recorded position: #3 among boys in New South Wales, Australia, in 2024 (recorded 2015–2025).
New South Wales, Australia · Boys
Most recent2025
Most recently recorded at #3 among boys in New South Wales, Australia, in 2025.
New South Wales, Australia · Boys