Fionn vs Muiris
Fionn 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, Fionn was ranked #8 and Muiris #741 among boys in Republic of Ireland.
Fionn and Muiris over time
Fionn and Muiris appear together in 1 published list, across 24 years of shared records. Fionn held the stronger position in more years in 1 of them, Muiris in 0.
In none of those lists did their order change and stay changed.
Muiris reached its own highest recorded position earlier in 1 of those lists, and Fionn 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
Fionn and Muiris changed places 4 times in Republic of Ireland · Boys between 1971 and 2020, ending at #8 and #741.
List by list
Republic of Ireland · Boys24 shared years, 1971–2020
Fionn held the stronger position in 22 of those years, Muiris in 0.
Highest recorded here: Fionn #8 in 2020, Muiris #239 in 1981.
The order between them never changed and held in this list.
Most recent shared year, 2020: Fionn #8, 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.
Side by side
| Field | Fionn | Muiris |
|---|---|---|
| Record type | Editorially researched profile | Official statistical record (evidence-only) |
| Gender usage | male | male |
| Meaning | Traditionally interpreted as 'white' or 'fair', extending in Old Irish usage to 'bright' and figuratively 'true, just'. Strongly associated with the mythological hero Fionn mac Cumhaill. | Not yet recorded |
| Origin | Irish | Not yet recorded |
| Pronunciation | /ˈfɪn/ | Not yet recorded |
| Syllables | 1 | 2 |
| 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 #6 (2025) | Republic of Ireland · Boys #741 (2020) |
| Pronunciation clarity (demonstration score) | 90/100 | Not yet recorded |
| Spelling simplicity (demonstration score) | 94/100 | 88/100 |
| International familiarity (demonstration score) | 100/100 | 40/100 |
| Data Confidence | medium | medium |
What the data shows
- Fionn has a recorded origin (Irish); Muiris does not have one recorded yet.
- Fionn has 1 syllable, compared with 2 for Muiris.
- A meaning is recorded for Fionn; Muiris doesn't have one written yet.
- Both names have recorded usage in IE.
How each name got here
Fionn
Popularity journey
First recorded1971
First recorded at #257 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 recorded1971–2025
Highest recorded position: #6 among boys in Republic of Ireland, in 2023 (recorded 1971–2025).
Republic of Ireland · Boys
Most recent2025
Most recently recorded at #6 among boys in Republic of Ireland, in 2025.
Republic of Ireland · 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