Guillermina
Feminine form of William, a German name meaning "resolute protection".
Name Census estimates that about 1,466 living Americans carry the first name Guillermina. The name is used almost exclusively for girls. The average person named Guillermina today is around 49 years old, and the year with the single highest number of Guillermina births was 1966 (40 babies).
This page is the full Name Census profile for Guillermina. 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.
People living today
1.5K
~ 1 in 233,802 Americans
Peak year
1966
40 babies that year
Average age
49
years old
2024 SSA rank
#14,023
Tracked since 1918
Popularity
Guillermina: popularity over time
The SSA tracks Guillermina from the 1910s through to the 2020s, spanning 12 decades of birth certificate data. The biggest single decade for the name was the 1970s, with 350 total registrations. Usage has dropped considerably from its 1970s peak. The most recent decade brought in only a fraction of the registrations that the name once attracted.
Babies born per year
Decades
Guillermina 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 Guillermina during that decade, along with a combined total. This is useful for spotting eras where the name surged or retreated.
Geography
Where Guillerminas live
The SSA's state-level files cover 4 states and territories. California, Texas, Illinois recorded the most babies named Guillermina, while Arizona, Illinois, Texas recorded the fewest. The average across all reporting states is about 310 registrations each.
Origin
Meaning and history of Guillermina
Guillermina is a feminine name derived from the Spanish name Guillermo, which in turn comes from the Germanic name Willahelm. The name Willahelm is made up of two elements: "wil" meaning "will" or "desire," and "helm" meaning "protection" or "helmet." This combination suggests the meaning of "resolute protector" or "strong-willed warrior."
The name Guillermo entered the Spanish language during the Middle Ages, brought by the Visigoths who settled in the Iberian Peninsula. It gained prominence as the name of several Spanish kings, such as William I of Navarre (c. 1017-1063) and William II of Sicily (c. 1153-1189).
One of the earliest recorded instances of the feminine form Guillermina dates back to the 13th century. It appears in a document from the Kingdom of Aragon, referring to a noblewoman named Guillermina de Cardona.
Throughout history, several notable women have borne the name Guillermina. One of the most famous was Wilhelmina of Prussia (1751-1820), a Princess of Prussia who became the first Queen of the Netherlands upon the establishment of the Kingdom of the Netherlands in 1815.
Another prominent Guillermina was Guillermina Medrano (1913-2005), a Mexican artist and activist known for her murals depicting scenes of Mexican history and culture. She was a prominent figure in the Mexican Muralism movement of the 20th century.
In the world of literature, Guillermina Arango (1929-2018) was a renowned Colombian poet and essayist. Her works explored themes of love, nature, and the human condition, earning her numerous literary awards and recognition throughout Latin America.
Guillermina Rojas (1920-2017) was a pioneering Cuban actress and television personality. She starred in numerous films and telenovelas, becoming a beloved cultural icon in her home country and throughout the Spanish-speaking world.
Lastly, Guillermina Bravo (1920-2013) was a Mexican sculptor and painter known for her abstract and surrealist works. Her art was exhibited in galleries across Mexico and internationally, and she is considered one of the most influential Mexican artists of the 20th century.
People
Guillermina + last name combinations
How many people share a full name with Guillermina as the first name? Click a combination below to see the estimate, or search any pairing.
Related
Other names starting with G
Other first names starting with G with a similar number of bearers.
FAQ
Guillermina: questions and answers
How many people in the U.S. are named Guillermina?
Name Census puts the figure at roughly 1,466 living Americans. We arrive at this by taking every SSA birth registration for Guillermina 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 233,802 US residents.
Is Guillermina a common name?
We classify Guillermina as "Rare". It ranks above 92.3% of all first names in the SSA dataset by living bearers. Across the full history of the data, 1,924 babies have been registered with this name.
When was Guillermina most popular?
The single biggest year for Guillermina was 1966, when 40 babies received the name. The fact that the average living Guillermina is about 49 years old gives you a rough sense of which era contributed the most bearers who are still alive today.
Is Guillermina a female name?
Yes, 100.0% of people registered as Guillermina 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.
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.