Trinnie
A diminutive form of the feminine name Trina, derived from Katherine.
Name Census estimates that about 8 living Americans carry the first name Trinnie. The name is used almost exclusively for girls. The average person named Trinnie today is around 68 years old, and the year with the single highest number of Trinnie births was 1922 (8 babies).
This page is the full Name Census profile for Trinnie. Below you will find a gender breakdown showing how the name splits between male and female registrations, a year-by-year popularity chart stretching back to 1880, decade-level totals, the top US states for this name, its meaning and etymology, and a set of frequently asked questions with data-backed answers.
Key insights
- • The typical person named Trinnie is about 68 years old today, placing it firmly among the names of earlier generations. Most living Trinnies were born before 1968.
- • Fewer than 100 living Americans are believed to carry the name Trinnie. It is among the rarest names in the SSA records.
People living today
8
~ 1 in 42,844,292 Americans
Peak year
1922
8 babies that year
Average age
68
years old
1963 SSA rank
#7,587
Tracked since 1900
Popularity
Trinnie: popularity over time
The SSA tracks Trinnie from the 1900s through to the 1960s, spanning 4 decades of birth certificate data. The biggest single decade for the name was the 1920s, with 13 total registrations. Although the numbers have come down from the 1920s peak, Trinnie remains solidly in use and shows no sign of disappearing from maternity wards.
Babies born per year
Decades
Trinnie by decade
The table below breaks the full SSA timeline into ten-year windows. Each row shows how many male and female babies were given the name Trinnie during that decade, along with a combined total. This is useful for spotting eras where the name surged or retreated.
Origin
Meaning and history of Trinnie
The name Trinnie is a diminutive form of the feminine name Trina, which is derived from the Latin name Catrina or Catarine. The root name Catherine is of Greek origin, composed of the elements "katharos" meaning pure and "heiros" meaning sacred. It's thought to have been a reference to the purity and religiosity of St. Catherine of Alexandria, an early Christian martyr who lived in the 4th century.
Trinnie was most commonly used as a pet name or nickname for those named Catrina or Catherine during the Middle Ages and Renaissance periods in Western Europe. While the name Catrina fell out of favor, variations like Trina and Trinnie persisted as independent given names, especially in regions like England, France, and Italy.
One of the earliest recorded instances of the name Trinnie can be found in a 14th-century English parish record from the village of Bledlow, where a woman named Trinnie Smythe is listed as a landowner. Another early example is Trinnie Mortimer, a nun who lived in a convent in Canterbury in the late 15th century.
In the 16th century, Trinnie Mowbray was a notable English courtier who served under King Henry VIII. She is mentioned in historical accounts of the time for her role in organizing royal events and entertainments.
During the 17th century, Trinnie Cavendish was a philanthropist and patron of the arts who funded the construction of several churches and schools in London. She was born in 1628 and died in 1712.
In the 18th century, Trinnie Fitzherbert was a socialite and trendsetter in Regency-era England. Born in 1778, she was known for her influential fashion sense and was a close friend of the Prince Regent, later King George IV.
Moving into the 19th century, Trinnie Nightingale was a British social reformer and pioneer of modern nursing practices. Born in 1820, she is best known for her work during the Crimean War, where she improved the unsanitary conditions at a British base hospital, vastly reducing the death rate.
People
Trinnie + last name combinations
How many people share a full name with Trinnie as the first name? Click a combination below to see the estimate, or search any pairing.
Related
Other names starting with T
Other first names starting with T with a similar number of bearers.
FAQ
Trinnie: questions and answers
How many people in the U.S. are named Trinnie?
Name Census puts the figure at roughly 8 living Americans. We arrive at this by taking every SSA birth registration for Trinnie going back to 1880 and adjusting each cohort for expected survival using CDC actuarial life tables. The result is an age-weighted living-bearer count, not a raw birth total. That works out to about 1 in 42,844,292 US residents.
Is Trinnie a common name?
We classify Trinnie as "Very Rare". It ranks above 24.6% of all first names in the SSA dataset by living bearers. Across the full history of the data, 35 babies have been registered with this name.
When was Trinnie most popular?
The single biggest year for Trinnie was 1922, when 8 babies received the name. The fact that the average living Trinnie is about 68 years old gives you a rough sense of which era contributed the most bearers who are still alive today.
What does the SSA popularity chart show?
The chart tracks births, not the number of people alive with the name today. Each point shows how many babies were given the name Trinnie in that year. That makes it useful for spotting when the name rose, peaked, or faded.
Is Trinnie a female name?
Yes, 100.0% of people registered as Trinnie in the SSA data are female. You can see the full per-sex comparison in the gender distribution section above, which includes the latest year rank, birth count, and peak year for each sex.
Is Trinnie still being used today?
Yes. The SSA still recorded Trinnie in 2024, and the page above shows its latest-year rank where available. A name can be well past its peak and still remain in steady use, especially if it built up a large population over earlier decades.
Why can a name have a lot of living bearers even if it is not trendy now?
Because living-bearer counts and current baby-name popularity measure different things. A name like Trinnie can build up a very large population over many decades, even if fewer parents are choosing it now than they did at its peak.
Where does this data come from?
First-name figures come from the Social Security Administration's national baby name files, which cover every name on a birth certificate from 1880 to 2024. Living-bearer estimates layer in CDC actuarial life tables broken out by sex to account for mortality. The population baseline (342,754,338) is the Census Bureau's latest national estimate. You can read the full calculation on our methodology page.
Does every first name have Census demographic data?
No. The public Census first-name release only covers names that met the Bureau's publication rules, so many rarer names in the SSA files do not have a published Census demographic snapshot. In those cases, the page still shows the SSA trend, gender history, and state data.
How many Americans are named Trinnie?
Want to know how many people share the name Trinnie? HowManyOfMe.org, our sister site, puts the living-bearer count front and centre.