First recorded in 1638. From Swedish Gustav.
Gustavs m
- a male given name
- Klāvs Siliņš: Latviesu personvārdu vārdnīca. Riga "Zinātne" 1990, →ISBN
- [1] Population Register of Latvia: Gustavs was the only given name of 1039 persons in Latvia on May 21st 2010.