Cian vs Thaddeus

Cian and Thaddeuscompared 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.

Republic of Ireland · Boys
In 2021, Cian was ranked #23 and Thaddeus #755 among boys in Republic of Ireland.
England and Wales · Boys
In 2024, Cian was ranked #355 and Thaddeus #2921 among boys in England and Wales.

Cian and Thaddeus over time

Cian and Thaddeus appear together in 2 published lists, across 33 years of shared records. Cian held the stronger position in more years in 2 of them, Thaddeus in 0.

In none of those lists did their order change and stay changed.

Each reached its own highest recorded position first in 1 of the lists they share.

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

England and Wales · Boys23 shared years, 1996–2024
Cian held the stronger position in 23 of those years, Thaddeus in 0.
Highest recorded here: Cian #177 in 2004, Thaddeus #1470 in 2017.
The order between them never changed and held in this list.
Most recent shared year, 2024: Cian #355, Thaddeus #2921.
Republic of Ireland · Boys10 shared years, 1967–2021
Cian held the stronger position in 9 of those years, Thaddeus in 1.
Highest recorded here: Cian #11 in 2008, Thaddeus #243 in 1968.
The order between them never changed and held in this list.
Most recent shared year, 2021: Cian #23, Thaddeus #755.

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 Cian

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

Cian vs Dean
Over 60 shared years in Republic of Ireland · Boys, Cian rose about as far as Dean fell — from #177 and #229 in 1966 to #33 and #432 in 2025.
Cian · Dean · 60 shared years, 1966–2025 · Mirrored each other
See the 2025 Republic of Ireland ranking
George vs Cian
Over 60 shared years in Republic of Ireland · Boys, Cian rose about as far as George fell — from #55 and #177 in 1966 to #112 and #33 in 2025.
George · Cian · 60 shared years, 1966–2025 · Mirrored each other
See the 2025 Republic of Ireland ranking
Cian vs Jonathan
Over 60 shared years in Republic of Ireland · Boys, Cian rose about as far as Jonathan fell — from #177 and #103 in 1966 to #33 and #223 in 2025.
Cian · Jonathan · 60 shared years, 1966–2025 · Mirrored each other
See the 2025 Republic of Ireland ranking
Cian vs Ross
Over 59 shared years in Republic of Ireland · Boys, Cian rose about as far as Ross fell — from #177 and #199 in 1966 to #33 and #329 in 2025.
Cian · Ross · 59 shared years, 1966–2025 · Mirrored each other
See the 2025 Republic of Ireland ranking

Side by side

Side-by-side comparison of Cian, Thaddeus
Field	Cian	Thaddeus
Record type	Editorially researched profile	Official statistical record (evidence-only)
Gender usage	male	male
Meaning	Commonly interpreted as 'ancient' or 'enduring'.	Not yet recorded
Origin	Irish	Not yet recorded
Pronunciation	/ˈkiːən/	Not yet recorded
Syllables	1	2
Common variants / nicknames	Kian	Not yet recorded
Recorded regional usage	GB-ENW, GB-NIR, GB-SCT, IE	GB-ENW, IE
Most recent popularity observation	Republic of Ireland #24 (2025)	England and Wales · Boys #2921 (2024)
Pronunciation clarity (demonstration score)	90/100	Not yet recorded
Spelling simplicity (demonstration score)	95/100	76/100
International familiarity (demonstration score)	100/100	60/100
Data Confidence	high	medium

What the data shows

Cian has a recorded origin (Irish); Thaddeus does not have one recorded yet.
Cian has 1 syllable, compared with 2 for Thaddeus.
A meaning is recorded for Cian; Thaddeus doesn't have one written yet.
Both names have recorded usage in GB-ENW, IE.
The available evidence gives Cian a "high" Data Confidence level and Thaddeus a "medium" level — this reflects how complete and corroborated the underlying evidence is, not a judgement of either name.

How each name got here

Cian

Popularity journey

First recorded1966
First recorded at #177 among boys in Republic of Ireland in 1966 — the earliest year that source publishes this name, not necessarily the earliest it was used.
Republic of Ireland · Boys
Highest recorded1966–2025
Highest recorded position: #6 among boys in Republic of Ireland, in 2000 (recorded 1966–2025).
Republic of Ireland · Boys
Most recent2025
Most recently recorded at #24 in Republic of Ireland, in 2025.
Republic of Ireland

Thaddeus

Popularity journey

First recorded1967
First recorded at #265 among boys in Republic of Ireland in 1967 — the earliest year that source publishes this name, not necessarily the earliest it was used.
Republic of Ireland · Boys
Highest recorded1967–2021
Highest recorded position: #243 among boys in Republic of Ireland, in 1968 (recorded 1967–2021).
Republic of Ireland · Boys
Most recent2024
Most recently recorded at #2921 among boys in England and Wales, in 2024.
England and Wales · Boys