Treasa
Feminine · “strength”
Treasa is listed everywhere as the Irish form of Teresa, and that listing is worth examining rather than accepting. Irish equivalents for English names were very often matched by sound rather than by descent, sometimes by scholars and language revivalists working through the problem systematically, and a matched pair is not the same thing as a translation. Treasa may well be an older Irish word that simply happened to sound close enough to be recruited.
How old is the name Treasa?
Treasa first appears in US birth records in 1916 — 109 years ago. The typical Treasa alive today was born around 1965, making them about 60 years old. About 1,400 people named Treasa are estimated to be alive in the US today.
When was the name Treasa most popular?
Treasa peaked in 1967, reaching #1281 nationally. See the whole 1967 chart.
Where it comes from
From An Irish word for strength, or an assigned equivalent to Treasa
The story of Treasa
When Irish was being reclaimed as a written and official language, somebody had to decide what the Irish version of Teresa was, and of Sarah, and of Mary, and of a hundred other names that Irish speakers had been using in English for generations. Some of the answers were genuine descents. Others were matches made on sound, or on the shared feast day of two unrelated saints, or on nothing more than a scholar's judgment that these two names belonged together. The lists were then printed, taught, and used on birth certificates, and within a couple of generations the matches looked like ancient facts. Treasa sits in exactly that position. It is a real Irish name in real Irish use, its equivalence to Teresa is a modern arrangement, and the meaning you can give it depends entirely on which of those two stories you take as primary.
Meaningscholars disagree
strength
If the name is genuinely Irish, it belongs with an Irish word for strength or force, and that is the reading Irish sources give. If it is the assigned equivalent of Teresa, it inherits Teresa's meaning instead, which is a problem, because Teresa's own origin has never been established. So the name is contested in an unusually clean way: two possible histories, one with a meaning and one without, and no way to tell from the word itself which applies to any particular family.
How the name formed
- An Irish word for strength, or an assigned equivalent
- Matched to Teresa on the modern equivalence lists
- Used in Ireland as a name in its own right
- Reaching America with Irish families
Related forms: Treasa · Teresa · Teresa · Teresa
Pronouncing Treasa
TRASS-uh
Irish gives it two syllables with the stress on the first and a short vowel: closer to TRASS-uh than to TREE-suh. American speakers who meet it cold will often produce TREE-suh, treating the ea as a long vowel, and that pronunciation is now common enough here to be a genuine second reading.
Nicknames for Treasa
Moderate
What the data says
146 years of official birth records
The long climb, and where it stands now
The same years in position rather than babies
- First recorded
- 1916
- Most girls named
- 196771 — the highest on record
- Peak rank
- #1281reached in 1967
- Change vs 2004
- −20.0%8 in 2005, from 10
Rank is a position, a count is a headcount, and they move independently — a name can hold its rank while the number of babies behind it falls. Source: U.S. Social Security Administration.
Treasa in other languages
The same name elsewhere
- Treasa in Irish — same name
- Teresa in English — related form
- Teresa in Spanish — related form
- Teresa in Italian — related form
Treasas among us
people named Treasa are estimated to be alive in the US today
Estimated from SSA birth records and published actuarial life tables. Method
Is it right for you
Questions parents actually ask
Fashion outlook
Treasa sits outside the current charts, and that is its own kind of answer: naming cycles can only date the names they carried up. A name this rare has no decade stamped on it — it cannot go out of fashion, because it was never in.
Based on 146 years of naming cycles. How we read them
The trade-off
- It is a genuine Irish name rather than an anglicized approximation of one, which is rarer than it looks.
- It is short and clean on the page, with no silent letters and no Gaelic spelling conventions to explain.
- Tess is available immediately for anyone who wants an unremarkable everyday form.
- The first vowel is genuinely disputed between Ireland and America, and your child will hear both.
- The meaning depends on which history you accept, and there is no way to settle it.
- It will be read as a misspelling of Teresa by a good number of people who see it written.
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What they receive
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Treasa
Feminine
Frequently asked
- How many Treasas are there in the world?
- No country counts the world's names, so there is no worldwide figure — anyone quoting one is estimating. About 1,400 people named Treasa are estimated to be alive in the US today.
- How popular is the name Treasa in 2025?
- Treasa is rarely given in the US today — it does not rank in the top 2000 girl names.
- Will my child share the name Treasa with classmates?
- Treasa will almost certainly be the only one in school.
More T names
The most-given names starting with T, all years combined.
Teresa#908 · Theresa#1548 · Tiffany#878 · Tammy#3645 · Taylor#403 · Tina#2778 · Tracy#2153 · Thelma#4661
Looking for what else is popular rather than what resembles Treasa? See the current top 100.
Choosing between Treasa and another name?
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US figures from the Social Security Administration. 1880–2025. Data & methodology
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