The story
They were described (though not first discovered) by Jean-Martin Charcot and Charles-Philippe Robin in 1853, then in 1872 by Ernst Viktor von Leyden.
Etymology from Wiktionary, CC BY-SA 4.0.
Charcot-Leyden crystal
Today it means: Elongated, double-pyramidal crystal of eosinophils found in the sputum in bronchial asthma Full definition →