Aloysius
BoyLatin, French· “famous warrior”
- Meaning
- famous warrior
- Origin
- Latin, French
- Pronunciation
- al-oh-ISH-uhs
- Syllables
- 4
- US rank 2025
- #4,864
- US babies 2025
- 20
- Best rank
- #312 (1893)
- Peak year
- 1916
Meaning and origin of Aloysius
Aloysius is a Latin and French name that is usually said to mean “famous warrior”.
Aloysius is a Latinized form of Aloys, a medieval Occitan form of Louis, which comes from the Germanic hlud, famous, and wig, war or warrior. The name is closely tied to Saint Aloysius Gonzaga, an Italian Jesuit who died young in the sixteenth century and became a patron saint of youth. Catholic families in Ireland, Germany and the US used it widely. It is said al-oh-ISH-uhs, with the stress on the third syllable. Al and Louis are the usual nicknames. The name has a distinguished, old-world character.
Popularity over time
Aloysius has been given to babies in the United States since at least 1880, the first year of Social Security records. It has ranked in the top 1,000 in 61 different years. Its best national rank was #312 in 1893, and the most babies received it in 1916, when 199 were named Aloysius. In 2025, 20 babies were named Aloysius, and it ranked #4,864 nationally. Its use has been fairly steady over the past decade.
Its national rank moved from #431 in 1920, #1,341 in 1950, #2,833 in 1980, #4,585 in 2000, #6,048 in 2010, and #4,864 in 2025. Of the 5,724 US boys named Aloysius since records began, 26% were born in the 1920s, its biggest decade. The 1910s come next, with 1,372 babies. Since 2010, 276 more have been named Aloysius.
Other boys' names that peaked around the same time include Meyer, Lyman, Waldo, Dorsey, and Gustave.
Gender, sound and spelling
In the US it is used almost only for boys.
Aloysius is usually pronounced al-oh-ISH-uhs, with four syllables. It has eight letters, starts with A and ends in “-us”.
Middle names for Aloysius
A few middle names that flow with Aloysius: each avoids a matching first letter, a rhyme and a vowel clash where the names meet.
Sibling names for Aloysius
Similar names
Lists that include Aloysius
Frequently asked questions
What does the name Aloysius mean?
Aloysius is a Latin and French name that is usually said to mean “famous warrior”.
What is the origin of the name Aloysius?
Aloysius has Latin, French, and Germanic roots. Aloysius is a Latinized form of Aloys, a medieval Occitan form of Louis, which comes from the Germanic hlud, famous, and wig, war or warrior.
Is Aloysius a popular name?
Not especially. Aloysius ranked #4,864 in the US in 2025, which puts it outside the top 1,000.
Is Aloysius a boy or girl name?
Aloysius is mainly a boy's name. In the US it is used almost only for boys.
How do you pronounce Aloysius?
Aloysius is usually pronounced al-oh-ISH-uhs. Stressed syllables are in capital letters.
Popularity figures come from US Social Security card applications (names given to at least five babies in a year, 1880 to 2025). How we source names and meanings