i 've discovered that mrs. jellett has a rather handsome , rather young footman she brings everywhere , that mr. william greaves has a valet who spent most of his youth in newgate , that mr. and mrs. warner , despite their newly wedded bliss , keep separate bedrooms-although i 'd suspected that already '' -the smile he gave was rather nasty- '' and that lady herrick has a birthmark in the shape of a butterfly on her left buttock .