Where does “Rickettsia” come from?
Rickettsia (English) comes from Translingual Rickettsia, from English Ricketts, from English Rickett, from English Richard, from Middle English Rycharde, from Old French Richard, from Medieval Latin Richardus, from Frankish Rīkahard — to straighten, to right oneself; right; just.
Ancestry of “Rickettsia”, step by step