Marilyn vs Riona
Marilyn and Rionacompared 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 · Girls
In 2018, Marilyn was ranked #629 and Riona #896 among girls in Republic of Ireland.
England and Wales · Girls
In 2025, Marilyn was ranked #1719 and Riona #1809 among girls in England and Wales.
Marilyn and Riona over time
Marilyn and Riona appear together in 2 published lists, across 38 years of shared records. Neither was ahead in more lists than the other.
The order between them changed and held in 2 of those lists — a change in that published list, never a claim that one name displaced the other.
Each reached its own highest recorded position first in 1 of the lists they share.
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
England and Wales · Girls26 shared years, 1996–2025
Marilyn held the stronger position in 15 of those years, Riona in 10.
Highest recorded here: Marilyn #1541 in 2024, Riona #1584 in 2008.
The order changed in 2013: Marilyn moved ahead. In 2012 they stood at #2521 and #2338; by 2013 that had become #1707 and #4050.
Most recent shared year, 2025: Marilyn #1719, Riona #1809.
Republic of Ireland · Girls12 shared years, 1976–2018
Marilyn held the stronger position in 2 of those years, Riona in 8.
Highest recorded here: Marilyn #388 in 1978, Riona #258 in 2015.
The order changed in 2018: Marilyn moved ahead. In 2017 they stood at #873 and #289; by 2018 that had become #629 and #896.
Most recent shared year, 2018: Marilyn #629, Riona #896.
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 | Marilyn | Riona |
|---|---|---|
| Record type | Official statistical record (evidence-only) | Official statistical record (evidence-only) |
| Gender usage | female | female |
| Meaning | Not yet recorded | Not yet recorded |
| Origin | Not yet recorded | Not yet recorded |
| Pronunciation | Not yet recorded | Not yet recorded |
| Syllables | 3 | 2 |
| Common variants / nicknames | Not yet recorded | Not yet recorded |
| Recorded regional usage | AU-NSW, GB-ENW, GB-NIR, IE, NZ | GB-ENW, GB-NIR, IE |
| Most recent popularity observation | England and Wales · Girls #1719 (2025) | Republic of Ireland · Girls #413 (2025) |
| Pronunciation clarity (demonstration score) | Not yet recorded | Not yet recorded |
| Spelling simplicity (demonstration score) | 82/100 | 94/100 |
| International familiarity (demonstration score) | 100/100 | 100/100 |
| Data Confidence | medium | medium |
What the data shows
- Marilyn has 3 syllables, compared with 2 for Riona.
- Both names have recorded usage in GB-ENW, GB-NIR, IE.
How each name got here
Marilyn
Popularity journey
First recorded1952
First recorded at #28 among girls in New South Wales, Australia in 1952 — the earliest year that source publishes this name, not necessarily the earliest it was used.
New South Wales, Australia · Girls
Highest recorded1952–1956
Highest recorded position: #19 among girls in New South Wales, Australia, in 1953 (recorded 1952–1956).
New South Wales, Australia · Girls
Most recent2025
Most recently recorded at #1719 among girls in England and Wales, in 2025.
England and Wales · Girls
Riona
Popularity journey
First recorded1976
First recorded at #392 among girls in Republic of Ireland in 1976 — the earliest year that source publishes this name, not necessarily the earliest it was used.
Republic of Ireland · Girls
Highest recorded1976–2025
Highest recorded position: #169 among girls in Republic of Ireland, in 2006 (recorded 1976–2025).
Republic of Ireland · Girls
Most recent2025
Most recently recorded at #1809 among girls in England and Wales, in 2025.
England and Wales · Girls