Geis Family History
Geis Name Meaning
German: from the personal name Giso a short form of any of various ancient Germanic personal names beginning with Gis- such as Giselbrecht Giselher (see Gieseler ). Compare Gise Guice and Guyse . Probably also an altered form of German Geiss or Gies .
Source: Dictionary of American Family Names 2nd edition, 2022