Tadhg vs Thaddeus

Tadhg 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, Tadhg was ranked #10 and Thaddeus #755 among boys in Republic of Ireland.
England and Wales · Boys
In 2024, Tadhg was ranked #406 and Thaddeus #2921 among boys in England and Wales.

Tadhg and Thaddeus over time

Tadhg and Thaddeus appear together in 2 published lists, across 32 years of shared records. Tadhg held the stronger position in more years in 2 of them, Thaddeus 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.

Thaddeus reached its own highest recorded position earlier in 2 of those lists, and Tadhg 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

England and Wales · Boys23 shared years, 1996–2024
Tadhg held the stronger position in 22 of those years, Thaddeus in 1.
Highest recorded here: Tadhg #406 in 2024, Thaddeus #1470 in 2017.
The order changed in 1998: Tadhg moved ahead. In 1997 they stood at #2357 and #2020; by 1998 that had become #1263 and #2901.
Most recent shared year, 2024: Tadhg #406, Thaddeus #2921.
Republic of Ireland · Boys9 shared years, 1967–2021
Tadhg held the stronger position in 9 of those years, Thaddeus in 0.
Highest recorded here: Tadhg #10 in 2021, Thaddeus #265 in 1967.
The order between them never changed and held in this list.
Most recent shared year, 2021: Tadhg #10, 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 Tadhg

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

George vs Tadhg
Over 59 shared years in Republic of Ireland · Boys, Tadhg rose about as far as George fell — from #56 and #222 in 1965 to #112 and #8 in 2025.
George · Tadhg · 59 shared years, 1965–2025 · Mirrored each other
See the 2025 Republic of Ireland ranking
Tadhg vs Jonathan
Over 59 shared years in Republic of Ireland · Boys, Tadhg rose about as far as Jonathan fell — from #222 and #137 in 1965 to #8 and #223 in 2025.
Tadhg · Jonathan · 59 shared years, 1965–2025 · Mirrored each other
See the 2025 Republic of Ireland ranking
Shane vs Tadhg
Over 59 shared years in Republic of Ireland · Boys, Tadhg rose about as far as Shane fell — from #65 and #222 in 1965 to #152 and #8 in 2025.
Shane · Tadhg · 59 shared years, 1965–2025 · Mirrored each other
See the 2025 Republic of Ireland ranking
Tadhg vs Dean
Over 58 shared years in Republic of Ireland · Boys, Tadhg rose about as far as Dean fell — from #245 and #265 in 1967 to #8 and #432 in 2025.
Tadhg · Dean · 58 shared years, 1967–2025 · Mirrored each other
See the 2025 Republic of Ireland ranking

Side by side

Side-by-side comparison of Tadhg, Thaddeus
Field	Tadhg	Thaddeus
Record type	Editorially researched profile	Official statistical record (evidence-only)
Gender usage	male	male
Meaning	Traditionally interpreted as 'poet'.	Not yet recorded
Origin	Irish	Not yet recorded
Pronunciation	/ˈtˠəiɡ/	Not yet recorded
Syllables	1	2
Common variants / nicknames	Not yet recorded	Not yet recorded
Recorded regional usage	GB-ENW, GB-NIR, GB-SCT, IE	GB-ENW, IE
Most recent popularity observation	Republic of Ireland · Boys #8 (2025)	England and Wales · Boys #2921 (2024)
Pronunciation clarity (demonstration score)	90/100	Not yet recorded
Spelling simplicity (demonstration score)	94/100	76/100
International familiarity (demonstration score)	100/100	60/100
Data Confidence	medium	medium

What the data shows

Tadhg has a recorded origin (Irish); Thaddeus does not have one recorded yet.
Tadhg has 1 syllable, compared with 2 for Thaddeus.
A meaning is recorded for Tadhg; Thaddeus doesn't have one written yet.
Both names have recorded usage in GB-ENW, IE.

How each name got here

Tadhg

Popularity journey

First recorded1965
First recorded at #222 among boys in Republic of Ireland in 1965 — the earliest year that source publishes this name, not necessarily the earliest it was used.
Republic of Ireland · Boys
Highest recorded1965–2025
Highest recorded position: #6 among boys in Republic of Ireland, in 2024 (recorded 1965–2025).
Republic of Ireland · Boys
Most recent2025
Most recently recorded at #8 among boys in Republic of Ireland, in 2025.
Republic of Ireland · Boys

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