First recorded as a given name of Latvians in the end of 19th century. Of Germanic origin. Cognate to English Aloysius.
- A male given name.
- Klāvs Siliņš: Latviesu personvārdu vārdnīca. Riga "Zinātne" 1990, →ISBN
-  Population Register of Latvia: Aloizs was the only given name of 299 persons in Latvia on May 21st 2010.