Fionnan vs Theodore
Fionnan 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 2019, Fionnan was ranked #4702 and Theodore #18 among boys in England and Wales.
Northern Ireland · Boys
In 2023, Fionnan was ranked #395 and Theodore #47 among boys in Northern Ireland.
Republic of Ireland · Boys
In 2017, Fionnan was ranked #356 and Theodore #156 among boys in Republic of Ireland.
Fionnan and Theodore over time
Fionnan and Theodore appear together in 2 published lists, across 26 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.
Fionnan reached its own highest recorded position earlier in 2 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.
List by list
Republic of Ireland · Boys17 shared years, 1992–2017
Fionnan held the stronger position in 10 of those years, Theodore in 6.
Highest recorded here: Fionnan #211 in 2006, Theodore #156 in 2017.
The order between them never changed and held in this list.
Most recent shared year, 2017: Fionnan #356, Theodore #156.
Northern Ireland · Boys9 shared years, 2013–2023
Fionnan held the stronger position in 1 of those years, Theodore in 8.
Highest recorded here: Fionnan #244 in 2013, Theodore #47 in 2023.
The order changed in 2015: Theodore moved ahead. In 2014 they stood at #244 and #343; by 2015 that had become #415 and #211.
Most recent shared year, 2023: Fionnan #395, Theodore #47.
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 Theodore
Pairs where Theodore shares a published list with another name, each measured inside one registrar's own list.
- Theodore vs Elijah
Theodore and Elijah both rose over the same years in 5 registrars — England and Wales · Boys; New South Wales, Australia · 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.
Theodore · Elijah · 30 shared years, 1996–2025 · Moved together in several countries
- Theodore vs Hugo
Theodore and Hugo both rose over the same years in 5 registrars — England and Wales · Boys; New South Wales, Australia · 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.
Theodore · Hugo · 31 shared years, 1992–2025 · Moved together in several countries
- Leo vs Theodore
Leo and Theodore both rose over the same years in 5 registrars — England and Wales · Boys; New South Wales, Australia · 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.
Leo · Theodore · 33 shared years, 1964–2025 · Moved together in several countries
- Luca vs Theodore
Luca and Theodore both rose over the same years in 5 registrars — England and Wales · Boys; New South Wales, Australia · 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.
Luca · Theodore · 30 shared years, 1996–2025 · Moved together in several countries
Side by side
| Field | Fionnan | 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, IE | AU-NSW, GB-ENW, GB-NIR, GB-SCT, IE, NZ |
| Most recent popularity observation | Northern Ireland · Boys #395 (2023) | New South Wales, Australia · Boys #3 (2025) |
| Pronunciation clarity (demonstration score) | Not yet recorded | 90/100 |
| Spelling simplicity (demonstration score) | 82/100 | 76/100 |
| International familiarity (demonstration score) | 100/100 | 100/100 |
| Data Confidence | medium | high |
What the data shows
- Theodore has a recorded origin (Greek); Fionnan does not have one recorded yet.
- Fionnan has 2 syllables, compared with 3 for Theodore.
- A meaning is recorded for Theodore; Fionnan doesn't have one written yet.
- Both names have recorded usage in GB-ENW, GB-NIR, IE.
- The available evidence gives Fionnan 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
Fionnan
Popularity journey
First recorded1971
First recorded at #304 among boys in Republic of Ireland in 1971 — the earliest year that source publishes this name, not necessarily the earliest it was used.
Republic of Ireland · Boys
Highest recorded1971–2017
Highest recorded position: #211 among boys in Republic of Ireland, in 2006 (recorded 1971–2017).
Republic of Ireland · Boys
Most recent2023
Most recently recorded at #395 among boys in Northern Ireland, in 2023.
Northern 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