Guillermina
Feminine · “resolute protection”
The w at the front of William became a gu in Spanish and a g in Italian, and the reason is that neither language had the sound. Germanic names arriving in the Romance world had to be rewritten with whatever came closest, and this particular substitution was applied so consistently that it is a reliable marker of a Germanic import.
How old is the name Guillermina?
Guillermina first appears in US birth records in 1918 — 107 years ago. The typical Guillermina alive today was born around 1969, making them about 56 years old. About 1,600 people named Guillermina are estimated to be alive in the US today.
When was the name Guillermina most popular?
Guillermina peaked in 1966, reaching #1796 nationally. See the whole 1966 chart.
Lists built from the same records:
Where it comes from
From Wilhelm to Guillermina
The story of Guillermina
The same substitution left visible pairs in English. Because English borrowed some words from Norman French and the same words again from central French — where the sound had gone the other way — it now has doublets: warden and guardian, warranty and guarantee, wile and guile, ward and guard. Each pair is one Germanic word arriving twice by different routes, with the two forms drifting into slightly different meanings so that both survived. A name beginning with gu is carrying exactly the same history as a word beginning with w, and English has kept the evidence in its vocabulary.
Meaning
resolute protection
Two Germanic elements, meaning will or desire and helmet or protection. The compound traveled into Spanish through the Visigoths and then again through the Normans, and the sense is not in dispute.
How the name formed
- Wilhelm
- Guillermo
- Guillermina
Related forms: Guillermina · Guglielmina · Wilhelmina · Guillemette
Pronouncing Guillermina
gee-yer-MEE-nah
Four syllables with the stress on the third. The u after the g is silent and the double l is the Spanish sound closest to an English y.
Nicknames for Guillermina
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
- 1918
- Most girls named
- 196640 — the highest on record
- Peak rank
- #1796reached in 1966
- Change vs 2019
- −33.3%6 in 2024, from 9
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.
Guillermina in other languages
The same name elsewhere
- Guillermina in Spanish — same name
- Guglielmina in Italian — same name
- Wilhelmina in Dutch — same name
- Guillemette in French — related form
Strongest US states over the last decade: California.
Guillerminas among us
people named Guillermina 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
Guillermina 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
- Mina sits inside it as a short form used across half of Europe.
- It is a completely ordinary name in Spanish rather than a respelling.
- The rhythm is long and even and carries well.
- Four syllables with two Spanish-specific letter values is a lot for English speakers.
- It will be shortened immediately by anyone outside the family.
- The generation that used it in America is now elderly.
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Guillermina
Feminine
Frequently asked
- How many Guillerminas are there in the world?
- No country counts the world's names, so there is no worldwide figure — anyone quoting one is estimating. About 1,600 people named Guillermina are estimated to be alive in the US today.
- How popular is the name Guillermina in 2025?
- Guillermina is rarely given in the US today — it does not rank in the top 2000 girl names.
- Will my child share the name Guillermina with classmates?
- Guillermina will almost certainly be the only one in school.
More G names
The most-given names starting with G, all years combined.
Grace#38 · Gloria#654 · Gladys#3211 · Geraldine#2438 · Gail#8362 · Gertrude#6546 · Georgia#99 · Gina#2076
Looking for what else is popular rather than what resembles Guillermina? See the current top 100.
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US figures from the Social Security Administration. 1880–2025. Data & methodology
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