What does Aloisius mean?
Aloisius /aloi-sius/ [4 sylls.] 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, Aloysius, Lewis (#597 in 2014), Louis (#289) and Ludwig are the prominent related forms of Aloisius (outside Top 1000) rated in the Top 1000. Usage of these boy names reached its peak during 1900-1909 (usage of 0.7306%) and is now much lower (usage 0.2228%, ▼69.5%), with the forms Alois, Aloysius, Lewis, Louis and Ludwig falling out of style. (2014 Birth Statistics)
A suggested similar baby name is Aleksius. Like Aloisius, this name is not commonly used.