E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
Companions of Jehu.
The Chouans were so called, from a fanciful analogy between their self-imposed task and that appointed to Jehu, on being set over the kingdom of Israel. Jehu was to cut off
Ahab and Jezebel, with all their house, and all the priests of Baal. The Chouans were to cut off all who assassinated Louis XVI., and see that his brother (Jehu) was placed on the throne.