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BoyProto-Germanic origin3 syllables

Aloysius

Literal root meaning: “loud; famous + battle”

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About the name Aloysius

Aloysius is a boy name with Proto-Germanic roots, literally “loud; famous + battle”. It is related to Louis, which is where the meaning comes from.

It has a unique feel. In 2025, Aloysius ranked #4864 for boys in the US, with 20 babies given the name. Its peak year since 1940 was 1940. Since 2000, 100% of US babies named Aloysius were boys.

Etymology

A form of Louis, which comes from Proto-Germanic, meaning “loud; famous” + “battle”.

Name meaning adapted from Wiktionary (“Aloysius”, “Louis”) by Wiktionary contributors, CC BY-SA 4.0.

US rank 2025
#4864
In 2015
#5068
Babies in 2025
20

Popularity of Aloysius, 1940–2025

01325385019401960198020002020
BoysBabies per year in the US

Latest SSA data: 2025.

Popularity data: U.S. Social Security Administration national baby names (public domain; names given to at least 5 babies of one sex per year).

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Names similar to Aloysius

Name meanings marked or linked “Wiktionary” are adapted from Wiktionary by Wiktionary contributors, CC BY-SA 4.0; each name page links its source entry.