Origin: French suffix -ier
Xavier has 2 different meanings across 2 categories:
Spanish missionary and Jesuit who establish missionaries in Japan and Ceylon and the East Indies (1506-1552)
"Historians study how Saint Xavier's missionary work spread Christianity to Japan, Ceylon, and the East Indies."
A male given name from Spanish.
"My neighbor named his son Xavier after a popular Spanish male given name."
The surname Xavier is derived from the Basque toponym Xabier and was popularized by Saint Francis Xavier, who was born there in 16th-century Navarre. It entered English as a given name for men honoring this saint rather than being used directly as a place name at first.