Iwona vs Teresa
Iwona and Teresacompared 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.
Norway · Girls
In 1991, Iwona was ranked #466 and Teresa #489 among girls in Norway.
England and Wales · Girls
In 2011, Iwona was ranked #5785 and Teresa #1545 among girls in England and Wales.
Iwona and Teresa over time
Iwona and Teresa appear together in 1 published list, across 31 years of shared records. Iwona held the stronger position in more years in 1 of them, Teresa 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.
Teresa reached its own highest recorded position earlier in 1 of those lists, and Iwona 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
Iwona and Teresa were both ranked in Norway · Girls for 31 years, from 1958 to 1991, ending at #466 and #489.
List by list
Norway · Girls31 shared years, 1958–1991
Iwona held the stronger position in 27 of those years, Teresa in 4.
Highest recorded here: Iwona #181 in 1972, Teresa #236 in 1961.
The order changed in 1963: Iwona moved ahead. In 1962 they stood at #315 and #237; by 1963 that had become #342 and #379.
Most recent shared year, 1991: Iwona #466, Teresa #489.
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 | Iwona | Teresa |
|---|---|---|
| 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 | 3 |
| Common variants / nicknames | Not yet recorded | Not yet recorded |
| Recorded regional usage | GB-ENW, NO | AU-NSW, GB-ENW, GB-NIR, IE, NO, NZ |
| Most recent popularity observation | England and Wales · Girls #5785 (2011) | Republic of Ireland · Girls #885 (2025) |
| Pronunciation clarity (demonstration score) | Not yet recorded | Not yet recorded |
| Spelling simplicity (demonstration score) | 94/100 | 88/100 |
| International familiarity (demonstration score) | 60/100 | 100/100 |
| Data Confidence | medium | medium |
What the data shows
- Iwona and Teresa both have 3 syllables.
- Both names have recorded usage in GB-ENW, NO.
How each name got here
Iwona
Popularity journey
First recorded1958
First recorded at #314 among girls in Norway in 1958 — the earliest year that source publishes this name, not necessarily the earliest it was used.
Norway · Girls
Highest recorded1958–1994
Highest recorded position: #181 among girls in Norway, in 1972 (recorded 1958–1994).
Norway · Girls
Most recent1994
Most recently recorded at #632 among girls in Norway, in 1994.
Norway · Girls
Teresa
Popularity journey
First recorded1946
First recorded at #387 among girls in Norway in 1946 — the earliest year that source publishes this name, not necessarily the earliest it was used.
Norway · Girls
Highest recorded1964–2025
Highest recorded position: #19 among girls in Republic of Ireland, in 1964 (recorded 1964–2025).
Republic of Ireland · Girls
Most recent2025
Most recently recorded at #885 among girls in Republic of Ireland, in 2025.
Republic of Ireland · Girls