Liam vs Trevor
Liam and Trevorcompared 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, Liam was ranked #7 and Trevor #829 among boys in Republic of Ireland.
Northern Ireland · Boys
In 2007, Liam was ranked #59 and Trevor #276 among boys in Northern Ireland.
England and Wales · Boys
In 2024, Liam was ranked #70 and Trevor #1758 among boys in England and Wales.
Liam and Trevor over time
Liam and Trevor appear together in 3 published lists, across 96 years of shared records. Liam held the stronger position in more years in 3 of them, Trevor in 0.
In none of those lists did their order change and stay changed.
Liam reached its own highest recorded position earlier in 2 of those lists, Trevor in 1. 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.
- Longest-running competitions
Liam and Trevor were both ranked in Republic of Ireland · Boys for 59 years, from 1964 to 2025, ending at #7 and #829.
- Peaked in the same years
Both reached their highest recorded position in England and Wales · Boys within 2 years — Liam #10 in 1996, Trevor #538 in 1997.
List by list
Republic of Ireland · Boys59 shared years, 1964–2025
Liam held the stronger position in 53 of those years, Trevor in 6.
Highest recorded here: Liam #6 in 2021, Trevor #51 in 1975.
The order between them never changed and held in this list.
Most recent shared year, 2025: Liam #7, Trevor #829.
England and Wales · Boys29 shared years, 1996–2024
Liam held the stronger position in 29 of those years, Trevor in 0.
Highest recorded here: Liam #10 in 1996, Trevor #538 in 1997.
The order between them never changed and held in this list.
Most recent shared year, 2024: Liam #70, Trevor #1758.
Northern Ireland · Boys8 shared years, 1997–2007
Liam held the stronger position in 8 of those years, Trevor in 0.
Highest recorded here: Liam #36 in 1999, Trevor #218 in 2001.
The order between them never changed and held in this list.
Most recent shared year, 2007: Liam #59, Trevor #276.
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 | Liam | Trevor |
|---|---|---|
| Record type | Editorially researched profile | Official statistical record (evidence-only) |
| Gender usage | male | male |
| Meaning | A short form, inheriting its meaning from William — 'resolute protection' or 'will helmet'. | Not yet recorded |
| Origin | Irish, short form of William (via Uilliam) | Not yet recorded |
| Pronunciation | /ˈliːəm/ | Not yet recorded |
| Syllables | 1 | 2 |
| Common variants / nicknames | Not yet recorded | Not yet recorded |
| Recorded regional usage | AU-NSW, GB-ENW, GB-NIR, GB-SCT, IE, NO, NZ | AU-NSW, GB-ENW, GB-NIR, IE, NZ |
| Most recent popularity observation | Norway · Boys #7 (2025) | Republic of Ireland · Boys #829 (2025) |
| Pronunciation clarity (demonstration score) | 90/100 | Not yet recorded |
| Spelling simplicity (demonstration score) | 95/100 | 88/100 |
| International familiarity (demonstration score) | 100/100 | 100/100 |
| Data Confidence | medium | medium |
What the data shows
- Liam has a recorded origin (Irish, short form of William (via Uilliam)); Trevor does not have one recorded yet.
- Liam has 1 syllable, compared with 2 for Trevor.
- A meaning is recorded for Liam; Trevor doesn't have one written yet.
- Both names have recorded usage in AU-NSW, GB-ENW, GB-NIR, IE, NZ.
How each name got here
Liam
Popularity journey
First recorded1964
First recorded at #54 among boys in Republic of Ireland in 1964 — the earliest year that source publishes this name, not necessarily the earliest it was used.
Republic of Ireland · Boys
Highest recorded1986–2023
Highest recorded position: #1 among boys in New Zealand, in 2010 (recorded 1986–2023).
New Zealand · Boys
Most recent2025
Most recently recorded at #15 among boys in New South Wales, Australia, in 2025.
New South Wales, Australia · Boys
Trevor
Popularity journey
First recorded1952
First recorded at #35 among boys in New South Wales, Australia in 1952 — the earliest year that source publishes this name, not necessarily the earliest it was used.
New South Wales, Australia · Boys
Highest recorded1954–1972
Highest recorded position: #27 among boys in New Zealand, in 1954 (recorded 1954–1972).
New Zealand · Boys
Most recent2025
Most recently recorded at #829 among boys in Republic of Ireland, in 2025.
Republic of Ireland · Boys