Eoghain vs Jack

Eoghain 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.

Northern Ireland · Boys
In 2021, Eoghain was ranked #433 and Jack #1 among boys in Northern Ireland.
Republic of Ireland · Boys
In 2007, Eoghain was ranked #629 and Jack #1 among boys in Republic of Ireland.

Eoghain and Jack over time

Eoghain and Jack appear together in 1 published list, across 18 years of shared records. Jack held the stronger position in more years in 1 of them, Eoghain 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.

Eoghain reached its own highest recorded position earlier in 1 of those lists, and Jack 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

Republic of Ireland · Boys18 shared years, 1973–2007
Eoghain held the stronger position in 1 of those years, Jack in 15.
Highest recorded here: Eoghain #224 in 1984, Jack #1 in 2002.
The order changed in 1976: Jack moved ahead. In 1975 they stood at #290 and #320; by 1976 that had become #316 and #316.
Most recent shared year, 2007: Eoghain #629, Jack #1.

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
See the 2025 Republic of Ireland ranking
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 · 29 shared years, 1996–2024 · Peaked in the same years
See the 1996 England and Wales ranking

Side by side

Side-by-side comparison of Eoghain, Jack
Field	Eoghain	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	GB-NIR, IE	AU-NSW, GB-ENW, GB-NIR, GB-SCT, IE, NO, NZ
Most recent popularity observation	Northern Ireland · Boys #433 (2021)	Republic of Ireland · Boys #2 (2025)
Pronunciation clarity (demonstration score)	Not yet recorded	90/100
Spelling simplicity (demonstration score)	82/100	95/100
International familiarity (demonstration score)	60/100	100/100
Data Confidence	medium	high

What the data shows

Jack has a recorded origin (English, historically a diminutive of John); Eoghain does not have one recorded yet.
Eoghain has 2 syllables, compared with 1 for Jack.
A meaning is recorded for Jack; Eoghain doesn't have one written yet.
Both names have recorded usage in GB-NIR, IE.
The available evidence gives Eoghain 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

Eoghain

Popularity journey

First recorded1973
First recorded at #290 among boys in Republic of Ireland in 1973 — the earliest year that source publishes this name, not necessarily the earliest it was used.
Republic of Ireland · Boys
Highest recorded1973–2007
Highest recorded position: #224 among boys in Republic of Ireland, in 1984 (recorded 1973–2007).
Republic of Ireland · Boys
Most recent2021
Most recently recorded at #433 among boys in Northern Ireland, in 2021.
Northern Ireland · 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 recorded1996–2024
Highest recorded position: #1 among boys in England and Wales, in 1996 (recorded 1996–2024).
England and Wales · Boys
Most recent2025
Most recently recorded at #10 among boys in New South Wales, Australia, in 2025.
New South Wales, Australia · Boys