Here's why that Dictionary of Phrase and Fable is so fun (for me).
Looking for Danae, I stumbled across Chartreuse. Other than just a color, it's actually the named after the liquor made at La Grande Chartreuse by the Carthusians (which has that color). And in England the name of Carthusian Houses was bastardized to "charterhouse" because of this relation.
This information will be ever so useful in everyday life.