[Neither Faulkner nor Lysons notices any monumental memorial to the
Duchess of Mazarin, whose finances after the death of Charles II. (who
allowed her a pension of 4,000l. per annum) were very slender, so much
so that, according to Lysons, it was usual for the nobility and others,
who dined at her house, to leave money under the plates to pay for
their entertainment. She appears to have been in arrear for the parish
rates during the whole time of her residence at Chelsea.]
_Halcyon Days._--What is the derivation of "halcyon days?"