Meaning and name origin
Aloysius \a-loy-sius\ as a boy's name is pronounced al-oo-ISH-us. It is of Old German origin, and the meaning of Aloysius is "famous warrior". Latin version of Luigi or Louis, also related to Clovis and Ludwig. The name was rather common in Italy in the Middle Ages, and was by made popular by the 16th-century Italian saint Aloysius, patron saint of students. Sixteen kings of France bore the French form of this name, Louis.
There is 1 feminine form of Aloysius: Aloisia.
Aloysius is not a popular first name for males and an equally uncommon surname or last name for all people (Source: 2000 U.S. Population Census).
Displayed below is the baby name popularity of the name Aloysius for boys. Aloysius reached its highest rank of #372 in the U.S. in 1890-1899 (Source: 2014 Birth Name Statistics).
Displayed below is a comparison of the popularity of the boy name Aloysius and its variant forms. Popular variation forms ranked in the Top 1000/100 are Louis (#289), Lewis (#597), Luigi, Ludwig, Aloysius, Alois and Clovis. (Source: 2014 Birth Name Statistics).
A suggested similar baby name is Aleksius. Like Aloysius, this name is not commonly used.