Frithjof vs Jack
Frithjof and Jackcompared 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 2004, Frithjof was ranked #404 and Jack #443 among boys in Norway.
Frithjof and Jack over time
Frithjof and Jack appear together in 1 published list, across 13 years of shared records. Jack held the stronger position in more years in 1 of them, Frithjof 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.
Jack reached its own highest recorded position earlier in 1 of those lists, and Frithjof 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 Norway · Boys within 2 years — Frithjof #246 in 1946, Jack #171 in 1945.
List by list
Norway · Boys13 shared years, 1945–2004
Frithjof held the stronger position in 1 of those years, Jack in 12.
Highest recorded here: Frithjof #246 in 1946, Jack #171 in 1945.
The order changed in 2004: Frithjof moved ahead. In 2003 they stood at #555 and #370; by 2004 that had become #404 and #443.
Most recent shared year, 2004: Frithjof #404, Jack #443.
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 Jack
Pairs where Jack shares a published list with another name, each measured inside one registrar's own list.
- Jack vs Oisin
Over 53 shared years in Republic of Ireland · Boys, Jack rose about as far as Oisin fell — from #305 and #163 in 1970 to #2 and #262 in 2025.
Jack · Oisin · 53 shared years, 1970–2025 · Mirrored each other
- Jack vs Isaac
Jack and Isaac both rose over the same years in 4 registrars — New South Wales, Australia · Boys; New Zealand · Boys; Northern Ireland · Boys; Republic of Ireland · Boys. Each list is measured against its own starting position; the positions are never combined.
Jack · Isaac · 39 shared years, 1976–2025 · Moved together in several countries
- Jack vs Max
Jack and Max both rose over the same years in 4 registrars — New South Wales, Australia · Boys; New Zealand · Boys; Northern Ireland · Boys; Republic of Ireland · Boys. Each list is measured against its own starting position; the positions are never combined.
Jack · Max · 41 shared years, 1973–2025 · Moved together in several countries
- Jack vs Adam
Both reached their highest recorded position in England and Wales · Boys within 2 years — Jack #1 in 1996, Adam #16 in 1996.
Jack · Adam · 30 shared years, 1996–2025 · Peaked in the same years
Side by side
| Field | Frithjof | Jack |
|---|---|---|
| Record type | Official statistical record (evidence-only) | Editorially researched profile |
| Gender usage | male | male |
| Meaning | Not yet recorded | God is gracious (via John), though now used as an independent name. |
| Origin | Not yet recorded | English, historically a diminutive of John |
| Pronunciation | Not yet recorded | /ˈdʒæk/ |
| Syllables | 2 | 1 |
| Common variants / nicknames | Not yet recorded | Jankin |
| Recorded regional usage | NO | AU-NSW, GB-ENW, GB-NIR, GB-SCT, IE, NO, NZ |
| Most recent popularity observation | Norway · Boys #404 (2004) | Republic of Ireland · Boys #2 (2025) |
| Pronunciation clarity (demonstration score) | Not yet recorded | 90/100 |
| Spelling simplicity (demonstration score) | 76/100 | 95/100 |
| International familiarity (demonstration score) | 40/100 | 100/100 |
| Data Confidence | medium | high |
What the data shows
- Jack has a recorded origin (English, historically a diminutive of John); Frithjof does not have one recorded yet.
- Frithjof has 2 syllables, compared with 1 for Jack.
- A meaning is recorded for Jack; Frithjof doesn't have one written yet.
- Both names have recorded usage in NO.
- The available evidence gives Frithjof a "medium" Data Confidence level and Jack a "high" level — this reflects how complete and corroborated the underlying evidence is, not a judgement of either name.
How each name got here
Frithjof
Popularity journey
First recorded1945
First recorded at #298 among boys in Norway in 1945 — the earliest year that source publishes this name, not necessarily the earliest it was used.
Norway · Boys
Highest recorded1945–2004
Highest recorded position: #246 among boys in Norway, in 1946 (recorded 1945–2004).
Norway · Boys
Most recent2004
Most recently recorded at #404 among boys in Norway, in 2004.
Norway · Boys
Jack
Popularity journey
First recorded1945
First recorded at #171 among boys in Norway in 1945 — the earliest year that source publishes this name, not necessarily the earliest it was used.
Norway · Boys
Highest recorded1996–2025
Highest recorded position: #1 among boys in England and Wales, in 1996 (recorded 1996–2025).
England and Wales · Boys
Most recent2025
Most recently recorded at #24 among boys in England and Wales, in 2025.
England and Wales · Boys