Aloysius
Masculine · “famous warrior”
Aloysius is Louis run through Latin and Provençal until it stopped looking like itself — the same famous-warrior compound as Ludwig, wearing four centuries of Jesuit paperwork.
How old is the name Aloysius?
Aloysius was already in use when US birth records began in 1880 — it is at least 145 years old. The typical Aloysius alive today was born around 1924, making them about 101 years old. About 1,400 people named Aloysius are estimated to be alive in the US today.
When was the name Aloysius most popular?
Aloysius peaked in 1893, reaching #312 nationally. Today it ranks #4857, 4,545 places below that high. See the whole 1893 chart.
Lists built from the same records:
Where it comes from
From Chlodovech to Aloysius
The story of Aloysius
Aloysius Gonzaga was an Italian Jesuit of noble family who gave up his inheritance and died at twenty-three nursing plague victims in Rome. Canonized in 1726 and made patron of youth, he carried the Latin form across Catholic Europe and into Irish and Irish-American naming, often as a middle name. It peaked in American records around 1915.
Meaning
famous warrior
Through the Provençal Aloys, a form of Louis, from the Germanic hlud, 'famous', and wig, 'war'. The Latinized Aloysius was created for ecclesiastical use. It is the same name as Louis, Ludwig, Luigi and Clovis, arrived at by a different route.
How the name formed
- Chlodovech
- Louis
- Aloys
- Aloysius
Related forms: Luigi · Alois · Louis
Pronouncing Aloysius
al-oh-WISH-us
Four syllables, stress on the third. German Alois has three with the stress on the first.
Nicknames for Aloysius
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
- 1880
- Most boys named
- 1916199 — the highest on record
- Peak rank
- #312reached in 1893
- Change vs 2022
- +5.3%20 in 2025, from 19
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.
Aloysius in other languages
The same name elsewhere
- Luigi in Italian — related form
- Alois in German — related form
- Louis in French — related form
Aloysiuss among us
people named Aloysius are estimated to be alive in the US today
About 1 boy in 85,404 born in 2025 was named Aloysius
Estimated from SSA birth records and published actuarial life tables. Method
Is it right for you
What happens to a name after it peaks
Fashion outlook
Aloysius sits in the calm middle of the cycle — neither chasing a wave nor sliding off one. Middle-of-the-cycle names age slowly and predictably.
A scored estimate from 146 years of naming cycles — not a prophecy. Great names outlive statistics. How this is scored
Aloysius beside its neighbors
The names ranked closest to Aloysius in 2025, in babies rather than position — the bars are to scale.
US boys given each name in 2025.
The trade-off
- A documented Jesuit saint with a genuinely affecting biography stands behind it.
- It is unmistakable — almost nobody else in a room will have it.
- Al is available as a completely ordinary short form.
- Four syllables and a spelling that has to be dictated every time.
- It reads as strongly Catholic and strongly old-fashioned.
- It is period-coded to the early twentieth century.
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Aloysius
Masculine · #4857 in the U.S.
Frequently asked
- How many Aloysiuss are there in the world?
- No country counts the world's names, so there is no worldwide figure — anyone quoting one is estimating. About 1,400 people named Aloysius are estimated to be alive in the US today.
- How popular is the name Aloysius in 2025?
- Aloysius ranks #4857 among US boy names in 2025, with 20 babies given the name.
- How rare is the name Aloysius?
- About 1 in every 85,404 US boys born in 2025 was named Aloysius — 20 in all.
- Will my child share the name Aloysius with classmates?
- Aloysius will almost certainly be the only one in school.
Ranked beside Aloysius
Names sitting at a similar level of popularity right now.
Russ#4857 · Hercules#4857 · Marcial#4857 · Lauro#4857 · Marin#4857 · Gil#4857 · Calogero#4857 · Carlyle#4857
Looking for what else is popular rather than what resembles Aloysius? See the current top 100.
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US figures from the Social Security Administration. 1880–2025. Data & methodology
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