Brennan vs Dillan
Brennan and Dillancompared 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.
England and Wales · Boys
In 2025, Brennan was ranked #2664 and Dillan #2952 among boys in England and Wales.
Brennan and Dillan over time
Brennan and Dillan appear together in 1 published list, across 30 years of shared records. Dillan held the stronger position in more years in 1 of them, Brennan 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.
Brennan reached its own highest recorded position earlier in 1 of those lists, and Dillan 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.
- Repeatedly exchanged positions
Brennan and Dillan changed places 5 times in England and Wales · Boys between 1996 and 2025, ending at #2664 and #2952.
- Longest-running competitions
Brennan and Dillan were both ranked in England and Wales · Boys for 30 years, from 1996 to 2025, ending at #2664 and #2952.
- Peaked in the same years
Both reached their highest recorded position in England and Wales · Boys within 2 years — Brennan #543 in 2000, Dillan #473 in 2001.
List by list
England and Wales · Boys30 shared years, 1996–2025
Brennan held the stronger position in 3 of those years, Dillan in 24.
Highest recorded here: Brennan #543 in 2000, Dillan #473 in 2001.
The order changed in 2025: Brennan moved ahead. In 2024 they stood at #2921 and #2443; by 2025 that had become #2664 and #2952.
Most recent shared year, 2025: Brennan #2664, Dillan #2952.
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.
Side by side
| Field | Brennan | Dillan |
|---|---|---|
| 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 | 2 |
| Common variants / nicknames | Not yet recorded | Not yet recorded |
| Recorded regional usage | GB-ENW | GB-ENW, GB-NIR, IE |
| Most recent popularity observation | England and Wales · Boys #2664 (2025) | England and Wales · Boys #2952 (2025) |
| Pronunciation clarity (demonstration score) | Not yet recorded | Not yet recorded |
| Spelling simplicity (demonstration score) | 82/100 | 88/100 |
| International familiarity (demonstration score) | 40/100 | 100/100 |
| Data Confidence | medium | medium |
What the data shows
- Brennan and Dillan both have 2 syllables.
- Both names have recorded usage in GB-ENW.
How each name got here
Brennan
Popularity journey
First recorded1996
First recorded at #755 among boys in England and Wales in 1996 — the earliest year that source publishes this name, not necessarily the earliest it was used.
England and Wales · Boys
Highest recorded1996–2025
Highest recorded position: #543 among boys in England and Wales, in 2000 (recorded 1996–2025).
England and Wales · Boys
Most recent2025
Most recently recorded at #2664 among boys in England and Wales, in 2025.
England and Wales · Boys
Dillan
Popularity journey
First recorded1996
First recorded at #573 among boys in England and Wales in 1996 — the earliest year that source publishes this name, not necessarily the earliest it was used.
England and Wales · Boys
Highest recorded1997–2015
Highest recorded position: #242 among boys in Republic of Ireland, in 1998 (recorded 1997–2015).
Republic of Ireland · Boys
Most recent2025
Most recently recorded at #2952 among boys in England and Wales, in 2025.
England and Wales · Boys