Meaning and Name Origin
Gregorius \g-rego-rius, gr(e)-gorius\ as a name for boys. Gregorius' root is Greek, and the meaning of Gregorius is "watchful, vigilant". Gregorius is a derivative of Gregory (Greek): the first of the 16 popes and 10 saints with the name was called Gregory the Great. An unusual name for baby boys.
Gregorius has 1 variant: Grigorios.
Gregorius is an uncommonly occurring first name for men. Gregorius is an equally unusual surname for both adults and children. (2000 U.S. Census)
Shown below is a comparison of the popularity of the boy name Gregorius and affiliated names. Prominent varying forms of Gregorius (#unlisted) listed in the Top 1000 are Greg, Gregg, Greggory, Gregor, Gregorio and Gregory (#316 in 2014). Usage of these boy names was at its peak during the years 1960-1969 and has become much lower since, with the versions Greg, Gregg, Greggory and Gregorio becoming less stylish. Gregory (#316) is the most fashionable boy name here. (2014 Birth Statistics)