Dictionary of Medieval Names
from European Sources

Ratgis u. Old Saxon rād, Old High German rāt 'counsel, advice' + Proto-Germanic *gaisa, *gaiza 'arrow'.

The gender of the name is uncertain from context, though most other names ending in -gis are masculine.

France
Latin
c823 Ratgis (nom) irminon-vol2 39, Gaugiacum
Cite as: S.L. Uckelman. "Ratgis". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2019, no. 1. http://dmnes.org/2019/1/name/Ratgis.