Deirdre vs Mary
Deirdre and Marycompared 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 · Girls
In 2019, Deirdre was ranked #871 and Mary #92 among girls in Republic of Ireland.
England and Wales · Girls
In 1999, Deirdre was ranked #3900 and Mary #139 among girls in England and Wales.
Deirdre and Mary over time
Deirdre and Mary appear together in 1 published list, across 51 years of shared records. Mary held the stronger position in more years in 1 of them, Deirdre in 0.
In none of those lists did their order change and stay changed.
Mary reached its own highest recorded position earlier in 1 of those lists, and Deirdre 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.
- Longest-running competitions
Deirdre and Mary were both ranked in Republic of Ireland · Girls for 51 years, from 1964 to 2019, ending at #871 and #92.
- Peaked in the same years
Both reached their highest recorded position in Republic of Ireland · Girls within 2 years — Deirdre #7 in 1966, Mary #1 in 1964.
List by list
Republic of Ireland · Girls51 shared years, 1964–2019
Deirdre held the stronger position in 0 of those years, Mary in 51.
Highest recorded here: Deirdre #7 in 1966, Mary #1 in 1964.
The order between them never changed and held in this list.
Most recent shared year, 2019: Deirdre #871, Mary #92.
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 | Deirdre | Mary |
|---|---|---|
| Record type | Official statistical record (evidence-only) | Official statistical record (evidence-only) |
| Gender usage | female | female |
| 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, IE | AU-NSW, GB-ENW, GB-NIR, GB-SCT, IE, NO, NZ |
| Most recent popularity observation | Republic of Ireland · Girls #871 (2019) | Republic of Ireland · Girls #112 (2025) |
| Pronunciation clarity (demonstration score) | Not yet recorded | Not yet recorded |
| Spelling simplicity (demonstration score) | 82/100 | 95/100 |
| International familiarity (demonstration score) | 60/100 | 100/100 |
| Data Confidence | medium | medium |
What the data shows
- Deirdre and Mary both have 2 syllables.
- Both names have recorded usage in GB-ENW, IE.
How each name got here
Deirdre
Popularity journey
First recorded1964
First recorded at #14 among girls in Republic of Ireland in 1964 — the earliest year that source publishes this name, not necessarily the earliest it was used.
Republic of Ireland · Girls
Highest recorded1964–2019
Highest recorded position: #7 among girls in Republic of Ireland, in 1966 (recorded 1964–2019).
Republic of Ireland · Girls
Most recent2019
Most recently recorded at #871 among girls in Republic of Ireland, in 2019.
Republic of Ireland · Girls
Mary
Popularity journey
First recorded1945
First recorded at #67 among girls in Norway in 1945 — the earliest year that source publishes this name, not necessarily the earliest it was used.
Norway · Girls
Highest recorded1964–2025
Highest recorded position: #1 among girls in Republic of Ireland, in 1964 (recorded 1964–2025).
Republic of Ireland · Girls
Most recent2025
Most recently recorded at #518 among girls in Norway, in 2025.
Norway · Girls