Transcribers of the 1850 census had mistakenly transcribed the name as "Pringley" and "Grigley", making this record hard to find. However, I finally found it and transcribed it myself:
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CENSUS YR:  1850  STATE:  Pennsylvania  COUNTY:  York  DIVISION:  Fawn Township  REEL NO:  M432-839  PAGE NO:  139a
REFERENCE:  Enumerated on 9 December 1850 by Alexander Gordon
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 LN  HN   FN  LAST NAME      FIRST NAME     AGE  SEX  RACE  OCCUP.         VAL.      BIRTHPLACE       MRD.  SCH.  R/W  DDB   REMARKS
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. . .
 6   34   34  Quigley        Samuel         29    M    .    Blacksmith     450       Maryland          .     .     .    .    .
 7   34   34  Quigley        Elizabeth A.   25    F    .    .              .         Penn              .     .     .    .    .
 8   34   34  Quigley        Sarah Jane     3     F    .    .              .         Penn              .     .     .    .    .
 9   34   34  Quigley        Adaline        1     F    .    .              .         Penn              .     .     .    .    .
. . .
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