Fionan vs Lachlan
Fionan and Lachlancompared 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 2007, Fionan was ranked #357 and Lachlan #255 among boys in Northern Ireland.
Republic of Ireland · Boys
In 2017, Fionan was ranked #547 and Lachlan #394 among boys in Republic of Ireland.
Fionan and Lachlan over time
Fionan and Lachlan appear together in 1 published list, across 15 years of shared records. Fionan held the stronger position in more years in 1 of them, Lachlan 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.
Fionan reached its own highest recorded position earlier in 1 of those lists, and Lachlan 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
Fionan and Lachlan changed places 5 times in Republic of Ireland · Boys between 2000 and 2017, ending at #547 and #394.
List by list
Republic of Ireland · Boys15 shared years, 2000–2017
Fionan held the stronger position in 10 of those years, Lachlan in 5.
Highest recorded here: Fionan #250 in 2000, Lachlan #263 in 2016.
The order changed in 2015: Lachlan moved ahead. In 2014 they stood at #428 and #468; by 2015 that had become #615 and #355.
Most recent shared year, 2017: Fionan #547, Lachlan #394.
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 Lachlan
Pairs where Lachlan shares a published list with another name, each measured inside one registrar's own list.
- Daniel vs Lachlan
In 1998, Lachlan moved ahead of Daniel in New South Wales, Australia · Boys — #2 and #7 the year before became #6 and #3.
Daniel · Lachlan · 43 shared years, 1982–2025 · One moved ahead of the other
- Joshua vs Lachlan
In 2011, Lachlan moved ahead of Joshua in New South Wales, Australia · Boys — #4 and #6 the year before became #9 and #3.
Joshua · Lachlan · 42 shared years, 1982–2024 · One moved ahead of the other
- Matthew vs Lachlan
In 1998, Lachlan moved ahead of Matthew in New South Wales, Australia · Boys — #4 and #7 the year before became #4 and #3.
Matthew · Lachlan · 41 shared years, 1982–2023 · One moved ahead of the other
- Noah vs Lachlan
In 2012, Noah moved ahead of Lachlan in New South Wales, Australia · Boys — #7 and #3 the year before became #3 and #7.
Noah · Lachlan · 28 shared years, 1998–2025 · One moved ahead of the other
Side by side
| Field | Fionan | Lachlan |
|---|---|---|
| Record type | Official statistical record (evidence-only) | Editorially researched profile |
| Gender usage | male | male |
| Meaning | Not yet recorded | Traditionally understood as 'Viking' or 'Scandinavian' via its root name — someone associated with the land of the Norsemen. A secondary reading of that root gives 'land of the lakes'. |
| Origin | Not yet recorded | Scottish Gaelic (Anglicised), from Lochlann ('Scandinavia') |
| Pronunciation | Not yet recorded | /ˈlɒklən/ |
| Syllables | 2 | 2 |
| Common variants / nicknames | Not yet recorded | Not yet recorded |
| Recorded regional usage | GB-NIR, IE | AU-NSW, GB-ENW, GB-NIR, GB-SCT, IE, NZ |
| Most recent popularity observation | Northern Ireland · Boys #416 (2018) | New South Wales, Australia · Boys #34 (2025) |
| Pronunciation clarity (demonstration score) | Not yet recorded | 90/100 |
| Spelling simplicity (demonstration score) | 88/100 | 82/100 |
| International familiarity (demonstration score) | 60/100 | 100/100 |
| Data Confidence | medium | medium |
What the data shows
- Lachlan has a recorded origin (Scottish Gaelic (Anglicised), from Lochlann ('Scandinavia')); Fionan does not have one recorded yet.
- Fionan and Lachlan both have 2 syllables.
- A meaning is recorded for Lachlan; Fionan doesn't have one written yet.
- Both names have recorded usage in GB-NIR, IE.
How each name got here
Fionan
Popularity journey
First recorded1969
First recorded at #270 among boys in Republic of Ireland in 1969 — the earliest year that source publishes this name, not necessarily the earliest it was used.
Republic of Ireland · Boys
Highest recorded1969–2017
Highest recorded position: #223 among boys in Republic of Ireland, in 1996 (recorded 1969–2017).
Republic of Ireland · Boys
Most recent2018
Most recently recorded at #416 among boys in Northern Ireland, in 2018.
Northern Ireland · Boys
Lachlan
Popularity journey
First recorded1982
First recorded at #95 among boys in New South Wales, Australia in 1982 — the earliest year that source publishes this name, not necessarily the earliest it was used.
New South Wales, Australia · Boys
Highest recorded1982–2025
Highest recorded position: #2 among boys in New South Wales, Australia, in 2005 (recorded 1982–2025).
New South Wales, Australia · Boys
Most recent2025
Most recently recorded at #34 among boys in New South Wales, Australia, in 2025.
New South Wales, Australia · Boys