Derek vs Senán

Derek and Senáncompared 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 2025, Derek was ranked #432 and Senán #198 among boys in Republic of Ireland.

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 Derek

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

Mark vs Derek
In 1964 they stood at #28 and #30 in Republic of Ireland · Boys, 2 places apart; by 2025 they were #99 and #432.
Mark · Derek · 60 shared years, 1964–2025 · Started together, ended far apart
See the 2025 Republic of Ireland ranking
Robert vs Derek
In 1964 they stood at #22 and #30 in Republic of Ireland · Boys, 8 places apart; by 2025 they were #104 and #432.
Robert · Derek · 60 shared years, 1964–2025 · Started together, ended far apart
See the 2025 Republic of Ireland ranking
Andrew vs Derek
In 1964 they stood at #34 and #30 in Republic of Ireland · Boys, 4 places apart; by 2025 they were #106 and #432.
Andrew · Derek · 60 shared years, 1964–2025 · Started together, ended far apart
See the 2025 Republic of Ireland ranking
Christopher vs Derek
In 1964 they stood at #27 and #30 in Republic of Ireland · Boys, 3 places apart; by 2025 they were #121 and #432.
Christopher · Derek · 60 shared years, 1964–2025 · Started together, ended far apart
See the 2025 Republic of Ireland ranking

Side by side

Side-by-side comparison of Derek, Senán
Field	Derek	Senán
Record type	Official statistical record (evidence-only)	Official statistical record (evidence-only)
Gender usage	male	male
Meaning	Not yet recorded	Not yet recorded
Origin	Not yet recorded	Not yet recorded
Pronunciation	Not yet recorded	Not yet recorded
Syllables	2	1
Common variants / nicknames	Not yet recorded	Not yet recorded
Recorded regional usage	GB-ENW, GB-NIR, GB-SCT, IE, NZ	IE
Most recent popularity observation	Republic of Ireland · Boys #432 (2025)	Republic of Ireland · Boys #198 (2025)
Pronunciation clarity (demonstration score)	Not yet recorded	Not yet recorded
Spelling simplicity (demonstration score)	94/100	94/100
International familiarity (demonstration score)	100/100	40/100
Data Confidence	medium	medium

What the data shows

Derek has 2 syllables, compared with 1 for Senán.
Both names have recorded usage in IE.

How each name got here

Derek

Popularity journey

First recorded1954
First recorded at #89 among boys in New Zealand in 1954 — the earliest year that source publishes this name, not necessarily the earliest it was used.
New Zealand · Boys
Highest recorded1964–2025
Highest recorded position: #22 among boys in Republic of Ireland, in 1972 (recorded 1964–2025).
Republic of Ireland · Boys
Most recent2025
Most recently recorded at #432 among boys in Republic of Ireland, in 2025.
Republic of Ireland · Boys

Senán

Popularity journey

First recorded2018
First recorded at #471 among boys in Republic of Ireland in 2018 — the earliest year that source publishes this name, not necessarily the earliest it was used.
Republic of Ireland · Boys
Highest recorded2018–2025
Highest recorded position: #195 among boys in Republic of Ireland, in 2024 (recorded 2018–2025).
Republic of Ireland · Boys
Most recent2025
Most recently recorded at #198 among boys in Republic of Ireland, in 2025.
Republic of Ireland · Boys