Isabelle vs Sive

Isabelle and Sivecompared 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.

England and Wales · Girls
In 2016, Isabelle was ranked #21 and Sive #5785 among girls in England and Wales.
Republic of Ireland · Girls
In 2021, Isabelle was ranked #39 and Sive #586 among girls in Republic of Ireland.

Isabelle and Sive over time

Isabelle and Sive appear together in 1 published list, across 30 years of shared records. Isabelle held the stronger position in more years in 1 of them, Sive 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.

Sive reached its own highest recorded position earlier in 1 of those lists, and Isabelle 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.

Longest-running competitions
Isabelle and Sive were both ranked in Republic of Ireland · Girls for 30 years, from 1971 to 2021, ending at #39 and #586.

List by list

Republic of Ireland · Girls30 shared years, 1971–2021
Isabelle held the stronger position in 29 of those years, Sive in 1.
Highest recorded here: Isabelle #26 in 2010, Sive #373 in 2007.
The order changed in 1981: Isabelle moved ahead. In 1980 they stood at #466 and #417; by 1981 that had become #423 and #533.
Most recent shared year, 2021: Isabelle #39, Sive #586.

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 Isabelle

Pairs where Isabelle shares a published list with another name, each measured inside one registrar's own list.

Stacey vs Isabelle
In 1996 they stood at #97 and #102 in England and Wales · Girls, 5 places apart; by 2024 they were #3015 and #52.
Stacey · Isabelle · 29 shared years, 1996–2024 · Started together, ended far apart
See the 2024 England and Wales ranking
Sophia vs Isabelle
Sophia and Isabelle changed places 12 times in Republic of Ireland · Girls between 1971 and 2025, ending at #14 and #34.
Sophia · Isabelle · 44 shared years, 1971–2025 · Repeatedly exchanged positions
See the 2025 Republic of Ireland ranking
Amelia vs Isabelle
Amelia and Isabelle both rose over the same years in 3 registrars — England and Wales · Girls; New Zealand · Girls; Republic of Ireland · Girls. Each list is measured against its own starting position; the positions are never combined.
Amelia · Isabelle · 41 shared years, 1971–2025 · Moved together in several countries
Ava vs Isabelle
Both reached their highest recorded position in Republic of Ireland · Girls within 2 years — Ava #1 in 2008, Isabelle #26 in 2010.
Ava · Isabelle · 41 shared years, 1981–2025 · Peaked in the same years
See the 2010 Republic of Ireland ranking

Side by side

Side-by-side comparison of Isabelle, Sive
Field	Isabelle	Sive
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
Syllables	4	2
Common variants / nicknames	Not yet recorded	Not yet recorded
Recorded regional usage	AU-NSW, GB-ENW, GB-NIR, GB-SCT, IE, NO, NZ	GB-ENW, IE
Most recent popularity observation	Republic of Ireland · Girls #34 (2025)	Republic of Ireland · Girls #586 (2021)
Pronunciation clarity (demonstration score)	Not yet recorded	Not yet recorded
Spelling simplicity (demonstration score)	76/100	95/100
International familiarity (demonstration score)	100/100	60/100
Data Confidence	medium	medium

What the data shows

Isabelle has 4 syllables, compared with 2 for Sive.
Both names have recorded usage in GB-ENW, IE.

How each name got here

Isabelle

Popularity journey

First recorded1962
First recorded at #454 among girls in Norway in 1962 — the earliest year that source publishes this name, not necessarily the earliest it was used.
Norway · Girls
Highest recorded1996–2024
Highest recorded position: #17 among girls in England and Wales, in 2008 (recorded 1996–2024).
England and Wales · Girls
Most recent2025
Most recently recorded at #58 among girls in New South Wales, Australia, in 2025.
New South Wales, Australia · Girls

Sive

Popularity journey

First recorded1969
First recorded at #443 among girls in Republic of Ireland in 1969 — the earliest year that source publishes this name, not necessarily the earliest it was used.
Republic of Ireland · Girls
Highest recorded1969–2021
Highest recorded position: #373 among girls in Republic of Ireland, in 2007 (recorded 1969–2021).
Republic of Ireland · Girls
Most recent2021
Most recently recorded at #586 among girls in Republic of Ireland, in 2021.
Republic of Ireland · Girls