What does Aloisius mean?
Aloisius /aloi-sius/ as a name for boys is of Old German derivation, and the meaning of the name Aloisius is "famous warrior". Aloisius is an alternate form of Aloysius (Old German): Latin form of Luigi.
How popular is Aloisius?
Aloisius is an unusual given name for men. Aloisius is also an unusual surname for both adults and children. (2000 U.S. Census)
Below is a charted analysis of the popularity of the boy name Aloisius and affiliated names. Alois and Aloysius are the prominent related forms of Aloisius (outside Top 1000) rated in the Top 1000. Adoption of these relations of Aloisius was well-received among parents during 1900-1909 (usage of 0.5795%) and is now much lower, with the forms Alois and Aloysius becoming less in vogue. (2014 Birth Statistics)
A suggested similar baby name is Aleksius. Like Aloisius, this name is not commonly used.