Leszek vs Sean
Leszek and Seancompared 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 · Boys
In 1990, Leszek was ranked #632 and Sean #358 among boys in Norway.
Leszek and Sean over time
Leszek and Sean appear together in 1 published list, across 13 years of shared records. Leszek held the stronger position in more years in 1 of them, Sean 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.
Leszek reached its own highest recorded position earlier in 1 of those lists, and Sean 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.
List by list
Norway · Boys13 shared years, 1965–1990
Leszek held the stronger position in 10 of those years, Sean in 3.
Highest recorded here: Leszek #239 in 1965, Sean #358 in 1990.
The order changed in 1990: Sean moved ahead. In 1989 they stood at #500 and #509; by 1990 that had become #632 and #358.
Most recent shared year, 1990: Leszek #632, Sean #358.
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 Sean
Pairs where Sean shares a published list with another name, each measured inside one registrar's own list.
- Sean vs Kenneth
In 1964 they stood at #38 and #41 in Republic of Ireland · Boys, 3 places apart; by 2024 they were #123 and #785.
Sean · Kenneth · 60 shared years, 1964–2024 · Started together, ended far apart
- Sean vs Henry
In 1996 they stood at #49 and #58 in England and Wales · Boys, 9 places apart; by 2025 they were #615 and #13.
Sean · Henry · 30 shared years, 1996–2025 · Started together, ended far apart
- Sean vs Edward
In 1996 they stood at #49 and #45 in England and Wales · Boys, 4 places apart; by 2025 they were #615 and #31.
Sean · Edward · 30 shared years, 1996–2025 · Started together, ended far apart
- John vs Sean
In 1996 they stood at #46 and #49 in England and Wales · Boys, 3 places apart; by 2025 they were #174 and #615.
John · Sean · 30 shared years, 1996–2025 · Started together, ended far apart
Side by side
| Field | Leszek | Sean |
|---|---|---|
| Record type | Official statistical record (evidence-only) | Editorially researched profile |
| Gender usage | male | male |
| Meaning | Not yet recorded | The Irish form of John, ultimately carrying the meaning 'Yahweh is gracious' via its Hebrew ancestry. |
| Origin | Not yet recorded | Irish, Anglicised form of Sean, via Hebrew John |
| Pronunciation | Not yet recorded | /ʃɔːn/ |
| Syllables | 2 | 1 |
| Common variants / nicknames | Not yet recorded | Not yet recorded |
| Recorded regional usage | NO | AU-NSW, GB-ENW, GB-NIR, GB-SCT, IE, NO, NZ |
| Most recent popularity observation | Norway · Boys #632 (1990) | Republic of Ireland · Boys #141 (2025) |
| Pronunciation clarity (demonstration score) | Not yet recorded | 90/100 |
| Spelling simplicity (demonstration score) | 88/100 | 95/100 |
| International familiarity (demonstration score) | 40/100 | 100/100 |
| Data Confidence | medium | medium |
What the data shows
- Sean has a recorded origin (Irish, Anglicised form of Sean, via Hebrew John); Leszek does not have one recorded yet.
- Leszek has 2 syllables, compared with 1 for Sean.
- A meaning is recorded for Sean; Leszek doesn't have one written yet.
- Both names have recorded usage in NO.
How each name got here
Leszek
Popularity journey
First recorded1954
First recorded at #421 among boys in Norway in 1954 — the earliest year that source publishes this name, not necessarily the earliest it was used.
Norway · Boys
Highest recorded1954–1990
Highest recorded position: #192 among boys in Norway, in 1964 (recorded 1954–1990).
Norway · Boys
Most recent1990
Most recently recorded at #632 among boys in Norway, in 1990.
Norway · Boys
Sean
Popularity journey
First recorded1963
First recorded at #82 among boys in New South Wales, Australia in 1963 — the earliest year that source publishes this name, not necessarily the earliest it was used.
New South Wales, Australia · Boys
Highest recorded1964–2025
Highest recorded position: #1 among boys in Republic of Ireland, in 1997 (recorded 1964–2025).
Republic of Ireland · Boys
Most recent2025
Most recently recorded at #615 among boys in England and Wales, in 2025.
England and Wales · Boys