Isabella vs Siun
Isabella and Siuncompared 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 · Girls
In 2024, Isabella was ranked #44 and Siun #337 among girls in Northern Ireland.
Republic of Ireland · Girls
In 2017, Isabella was ranked #48 and Siun #145 among girls in Republic of Ireland.
Isabella and Siun over time
Isabella and Siun appear together in 1 published list, across 22 years of shared records. Isabella held the stronger position in more years in 1 of them, Siun 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.
Isabella reached its own highest recorded position earlier in 1 of those lists, and Siun 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.
- Peaked in the same years
Both reached their highest recorded position in Republic of Ireland · Girls within 2 years — Isabella #41 in 2014, Siun #132 in 2015.
List by list
Republic of Ireland · Girls22 shared years, 1995–2017
Isabella held the stronger position in 21 of those years, Siun in 1.
Highest recorded here: Isabella #41 in 2014, Siun #132 in 2015.
The order changed in 1996: Isabella moved ahead. In 1995 they stood at #516 and #451; by 1996 that had become #316 and #429.
Most recent shared year, 2017: Isabella #48, Siun #145.
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 | Isabella | Siun |
|---|---|---|
| Record type | Editorially researched profile | Official statistical record (evidence-only) |
| Gender usage | female | female |
| Meaning | My God is an oath (via Elizabeth). | Not yet recorded |
| Origin | Spanish/Italian, via Elizabeth | Not yet recorded |
| Pronunciation | /ˌɪzəˈbɛlə/ | Not yet recorded |
| Syllables | 4 | 1 |
| Common variants / nicknames | Bella, Izzy, Isabel, Isobel | Not yet recorded |
| Recorded regional usage | AU-NSW, GB-ENW, GB-NIR, GB-SCT, IE, NO, NZ | GB-NIR, IE |
| Most recent popularity observation | England and Wales · Girls #10 (2025) | Northern Ireland · Girls #337 (2024) |
| Pronunciation clarity (demonstration score) | 90/100 | Not yet recorded |
| Spelling simplicity (demonstration score) | 76/100 | 95/100 |
| International familiarity (demonstration score) | 100/100 | 60/100 |
| Data Confidence | high | medium |
What the data shows
- Isabella has a recorded origin (Spanish/Italian, via Elizabeth); Siun does not have one recorded yet.
- Isabella has 4 syllables, compared with 1 for Siun.
- A meaning is recorded for Isabella; Siun doesn't have one written yet.
- Both names have recorded usage in GB-NIR, IE.
- The available evidence gives Isabella a "high" Data Confidence level and Siun a "medium" level — this reflects how complete and corroborated the underlying evidence is, not a judgement of either name.
How each name got here
Isabella
Popularity journey
First recorded1960
First recorded at #472 among girls in Norway in 1960 — the earliest year that source publishes this name, not necessarily the earliest it was used.
Norway · Girls
Highest recorded1993–2025
Highest recorded position: #1 among girls in New South Wales, Australia, in 2007 (recorded 1993–2025).
New South Wales, Australia · Girls
Most recent2025
Most recently recorded at #10 among girls in England and Wales, in 2025.
England and Wales · Girls
Siun
Popularity journey
First recorded1982
First recorded at #523 among girls in Republic of Ireland in 1982 — the earliest year that source publishes this name, not necessarily the earliest it was used.
Republic of Ireland · Girls
Highest recorded1982–2017
Highest recorded position: #132 among girls in Republic of Ireland, in 2015 (recorded 1982–2017).
Republic of Ireland · Girls
Most recent2024
Most recently recorded at #337 among girls in Northern Ireland, in 2024.
Northern Ireland · Girls