You don't say what time frame you are looking for these people in, but the
only Pettifords I found in 1850 Grant County, Indiana census are the
following:
CENSUS YR: 1850 STATE or TERRITORY: IN COUNTY: Grant DIVISION: Mill
Township REEL NO: 432-147 PAGE NO: 152b
REFERENCE: 17th Sept 1850; Isaac Vandevanter Ass't Marshal;written p 304
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LN HN FN LAST NAME FIRST NAME AGE SEX RACE OCCUP.
VAL. BIRTHPLACE MRD. SCH. R/W DDB
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42 706 707 PETTIFORD Daniel 28 M M Farmer 200
NC X
1 706 707 PETTIFORD Eady 25 F M
NC X
2 706 707 PETTIFORD Parthina 7 F M
NC
3 706 707 PETTIFORD John E. 5 M M
Ind
4 706 707 PETTIFORD Louisa J. 3 F M
Ind
5 706 707 PETTIFORD Delvina 1 F M
Ind