NameCensus.
Very Rare

Fidensio

Of Italian origin, meaning "faithful" or "one who has faith".

Name Census estimates that about 5 living Americans carry the first name Fidensio. The name is used almost exclusively for boys. The average person named Fidensio today is around 64 years old, and the year with the single highest number of Fidensio births was 1955 (6 babies).

This page is the full Name Census profile for Fidensio. 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

  • Fewer than 100 living Americans are believed to carry the name Fidensio. It is among the rarest names in the SSA records.

People living today

5

~ 1 in 68,550,868 Americans

Peak year

1955

6 babies that year

Average age

64

years old

1955 SSA rank

#3,642

Tracked since 1955

Popularity

Fidensio: popularity over time

Babies born per year

023561955

Decades

Fidensio 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 Fidensio during that decade, along with a combined total. This is useful for spotting eras where the name surged or retreated.

DecadeMaleFemaleTotal
1950s606

Geography

Where Fidensios live

Origin

Meaning and history of Fidensio

The name Fidensio is of Latin origin, deriving from the word "fides" which means "faith" or "trust." It was a name commonly used in ancient Rome, particularly during the early days of Christianity when many converts adopted names with religious connotations.

One of the earliest recorded instances of the name Fidensio can be found in the writings of St. Jerome, a 4th-century scholar and translator of the Bible. He mentions a Christian martyr named Fidensio who was executed during the persecutions under the Roman Emperor Diocletian in the early 4th century.

In the 6th century, a Bishop of Padua named Fidensio was known for his charitable works and his efforts to help the poor and needy. He is revered as a saint in the Catholic Church, and his feast day is celebrated on April 28th.

During the Middle Ages, the name Fidensio was popular among Italian nobility. One notable figure was Fidensio Sanvitale, a wealthy merchant and politician from Parma who lived in the 15th century. He was known for his patronage of the arts and his support of the Renaissance movement.

Another historical figure with the name Fidensio was a 16th-century Italian philosopher and theologian named Fidensio Sighicelli. He was a professor at the University of Bologna and wrote extensively on topics such as metaphysics and the nature of the soul.

In the 17th century, a Spanish painter named Fidensio Carresa gained recognition for his religious works and portraits. He was particularly known for his depictions of saints and biblical scenes, which adorned many churches and monasteries throughout Spain.

While the name Fidensio fell out of favor in more recent centuries, it has been revived in some parts of Italy and Spain as a nod to its historical and cultural significance. Its meaning of "faith" and "trust" continues to resonate with many families who choose to bestow this ancient name upon their children.

People

Fidensio + last name combinations

How many people share a full name with Fidensio as the first name? Click a combination below to see the estimate, or search any pairing.

Related

Other names starting with F

Other first names starting with F with a similar number of bearers.

FAQ

Fidensio: questions and answers

How many people in the U.S. are named Fidensio?

Name Census puts the figure at roughly 5 living Americans. We arrive at this by taking every SSA birth registration for Fidensio 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 68,550,868 US residents.

Is Fidensio a common name?

We classify Fidensio as "Very Rare". It ranks above 18.2% of all first names in the SSA dataset by living bearers. Across the full history of the data, 6 babies have been registered with this name.

When was Fidensio most popular?

The single biggest year for Fidensio was 1955, when 6 babies received the name. The fact that the average living Fidensio is about 64 years old gives you a rough sense of which era contributed the most bearers who are still alive today.

Is Fidensio a male name?

Yes, 100.0% of people registered as Fidensio in the SSA data are male. 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.

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Fidensio

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