Lachlan vs Muiris

Lachlan and Muiriscompared 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 2020, Lachlan was ranked #294 and Muiris #741 among boys in Republic of Ireland.

Lachlan and Muiris over time

Lachlan and Muiris appear together in 1 published list, across 9 years of shared records. Lachlan held the stronger position in more years in 1 of them, Muiris 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.

Muiris 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.

List by list

Republic of Ireland · Boys9 shared years, 2000–2020
Lachlan held the stronger position in 6 of those years, Muiris in 2.
Highest recorded here: Lachlan #263 in 2016, Muiris #347 in 2000.
The order changed in 2012: Lachlan moved ahead. In 2011 they stood at #720 and #611; by 2012 that had become #401 and #718.
Most recent shared year, 2020: Lachlan #294, Muiris #741.

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
See the 1998 New South Wales, Australia ranking
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
See the 2011 New South Wales, Australia ranking
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
See the 1998 New South Wales, Australia ranking
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
See the 2012 New South Wales, Australia ranking

Side by side

Side-by-side comparison of Lachlan, Muiris
Field	Lachlan	Muiris
Record type	Editorially researched profile	Official statistical record (evidence-only)
Gender usage	male	male
Meaning	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'.	Not yet recorded
Origin	Scottish Gaelic (Anglicised), from Lochlann ('Scandinavia')	Not yet recorded
Pronunciation	/ˈlɒklən/	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	IE
Most recent popularity observation	New South Wales, Australia · Boys #34 (2025)	Republic of Ireland · Boys #741 (2020)
Pronunciation clarity (demonstration score)	90/100	Not yet recorded
Spelling simplicity (demonstration score)	82/100	88/100
International familiarity (demonstration score)	100/100	40/100
Data Confidence	medium	medium

What the data shows

Lachlan has a recorded origin (Scottish Gaelic (Anglicised), from Lochlann ('Scandinavia')); Muiris does not have one recorded yet.
Lachlan and Muiris both have 2 syllables.
A meaning is recorded for Lachlan; Muiris doesn't have one written yet.
Both names have recorded usage in IE.

How each name got here

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

Muiris

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 recorded1969–2020
Highest recorded position: #239 among boys in Republic of Ireland, in 1981 (recorded 1969–2020).
Republic of Ireland · Boys
Most recent2020
Most recently recorded at #741 among boys in Republic of Ireland, in 2020.
Republic of Ireland · Boys