Meaning and name origin
Gregorius \g-rego-rius, gr(e)-gorius\ as a boy's name is of Greek origin, and the meaning of Gregorius is "watchful, vigilant". Gregorius is a variant of Gregory (Greek): the first of the 16 popes and 10 saints with the name was called Gregory the Great.
Gregorius has 1 variant form: Grigorios.
Gregorius is not a popular first name for males and an equally uncommon surname or last name for all people (2000 U.S. Census).
Displayed below is a comparison of the popularity of the boy name Gregorius and its variant forms. The only popular variation form ranked in the Top 1000/100 is Gregory (#316). (2014 statistics).