Gero

Gender: Masculine
Origin: German
Meaning: “spear.”
(GEH-ro)

The name is derived from the Germanic element, ger meaning “spear.” It is also used as a short form for names beginning with such an element.

In Germany, its designated name-days are March 19 and June 29.

Sources

1. http://www.behindthename.com/name/gero