The story
- Proto-Indo-European*ǵʰey-
- Proto-Indo-European*ǵʰeys-
- Proto-Indo-European*ǵʰoysós
- Proto-Germanic*gaizaz
- Proto-West Germanic*gaiʀ
- Proto-Indo-European*kret-der.?
- Proto-Germanic*harduz
- Proto-West Germanic*hard(ī)
- Frankish*Gaiʀahard
- Old FrenchGerart
- Middle EnglishGerard
- EnglishGerard
- English todaygerardia
From Gerardia, historical synonym of Agalinis. The obsolete genus derives from English Gerard, being named after English herbalist John Gerard (1545–1612).
Etymology from Wiktionary, CC BY-SA 4.0.