Meaning: Its source is Hildefuns, an Ancient Germanic name meaning "Prepared for battle."

Languages: This boy's name is used in English and Spanish.

Variant Forms: Alonzo

Popularity: The name Alonso ranked 659th in popularity for males of all ages in a sample of 2000-2003 Social Security Administration statistics and 1219th in popularity for males of all ages in a sample of the 1990 US Census.