Sentence:  The haughty <WSD>Belgravians</WSD>, the aristocracy of rank, are greatly shocked at the bad manners of the aristocracy of wealth, the Barings and Rothschilds of the city, and earnestly entreat all "respectable" strangers at Prince Albert's fair to bear it ever in mind that London City is not London Town! 
Meaning of the word marked with <WSD> tags:  A member of the fashionable or aristocratic society assumed to reside in Belgravia.