The surname Garnett has multiple origins, primarily derived from Old French. It can stem from the medieval French diminutive surname "Guarinot, " meaning "Little war, " or from the occupational name "ganetier, " referring to a maker of iron hinges. The name has been recorded in England since the 11th century and has evolved over time with various spellings. It is significant because it reflects the historical and cultural exchange between England and France. The name's use has changed from being a straightforward surname to also being used as a given name, particularly in reference to the gemstone.
