A name sometimes applied to the aristocratic suburb of a city. “Piety Hill” and “Society Hill” mean the same thing.

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1833.  [There was a “Society Hill” (why so named?) on the south side of the old bounds of Philadelphia.]—Watson’s ‘Historic Tales of Philadelphia,’ p. 186.

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1849.  The most of the ‘plenty-penitentiaries’ and ‘big-bugs’ generally, dwell on the top of a hill, about a mile from the centre of the city, and dine late.—Knick. Mag., xxxiii. 545 (June).

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1854.  Dr. S. came to settle at Bloomfield, half a mile north of what is now Piety Hill,… in 1820.—Oregon Weekly Times, Nov. 18.

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