What does Aloisius mean?
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 (#unlisted) 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%, down 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.