A measure or standard
A creative spelling of the occupational name Gauge, referring to a person who worked as a measurer or an instrument used for measuring. It is derived from the Old French word 'jauge', which entered the English language as a term for a standard of measurement. While rare, this spelling is occasionally chosen by parents looking for a phonetic or unique variation of the more common Gauge.
Less common today
Guage isn't in the latest US Top 1000. It last peaked at #5,778 in 2005.
US births per 5-year period, 1990βpresent (SSA data).