Thomasina
Feminine · “twin”
Thomasina is the Latin way of making a woman's name from a man's, and English kept it in full when it usually would not. What is stranger is what happened to it in the West Country, where the same name wore down to something almost unrecognizable and became a regional name in its own right.
How old is the name Thomasina?
Thomasina first appears in US birth records in 1904 — 121 years ago. The typical Thomasina alive today was born around 1960, making them about 65 years old. About 2,600 people named Thomasina are estimated to be alive in the US today.
When was the name Thomasina most popular?
Thomasina peaked in 1932, reaching #969 nationally. See the whole 1932 chart.
Where it comes from
From teoma to Thomasina
The story of Thomasina
Two endings were available for making a woman's name from Thomas, and English used both: the Latin -ina and the French -ine, giving Thomasina and Thomasine. Both were ordinary names in Tudor and Stuart England, common enough to turn up in parish registers without comment. In Cornwall and Devon, Thomasine went further. Local speech pulled it down to Tamsin, dropped the middle entirely, and produced a name that has been distinctively West Country ever since and that most people do not connect with Thomas at all. Thomasina is the fuller survivor, and it carried into American records at the turn of the twentieth century.
Meaning
twin
Inherited unchanged from Thomas. The ending is a Latin feminine and adds nothing to the sense.
How the name formed
- teoma
- Thomas
- Thomasina
Related forms: Thomasine · Tamsin · Tommasina · Tomasa
Pronouncing Thomasina
tom-uh-SEE-nuh
Four syllables with the weight on the third. Some families use tom-uh-SY-nuh, with the vowel of fine, which is the older English reading.
Nicknames for Thomasina
High
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
- 1904
- Most girls named
- 196685 — the highest on record
- Peak rank
- #969reached in 1932
- Change vs 2013
- 0.0%6 in 2019, from 6
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.
Thomasina in other languages
The same name elsewhere
- Thomasine in English — related form
- Tamsin in Cornish — related form
- Tommasina in Italian — same name
- Tomasa in Spanish — related form
Thomasinas among us
people named Thomasina 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
Thomasina 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 built on one of the most recognizable names in Europe, so nobody has to be told what it is.
- It carries an unusually wide set of short forms, from the very traditional Tamsin to the plain Ina.
- The Latin method behind it is transparent and easy to explain in a sentence.
- Four syllables is long for a modern American name, and it will usually be shortened by others before it is shortened by you.
- Thomasine, Thomasena and Tomasina are all in the record and will be offered instead.
- The stress is genuinely unsettled between the older and the newer readings.
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What they receive
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Thomasina
Feminine
Frequently asked
- How many Thomasinas are there in the world?
- No country counts the world's names, so there is no worldwide figure — anyone quoting one is estimating. About 2,600 people named Thomasina are estimated to be alive in the US today.
- How popular is the name Thomasina in 2025?
- Thomasina is rarely given in the US today — it does not rank in the top 2000 girl names.
- Will my child share the name Thomasina with classmates?
- Thomasina 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 Thomasina? See the current top 100.
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US figures from the Social Security Administration. 1880–2025. Data & methodology
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