1860 census of Adams Co., Illinois, North East township, enumerated 23 Aug, lists on p. (407 replaced by 931, on image frame 21), as family #2775/2793:
Samuel G. Pettit, 40, farmer, b. Ky; Luemma, 38, b. Ind; Jonas, 11; Samuel, 9; Rachael, 8; Mary, 6; Laura, 4; Jane, 1. All childen born in Illinois. Mary Rose, 74, b. Va.

Two houses below is the Cyrus Jones, age 66, who accompanied Samuel’s parents in their migration from Greenup Co., Ky to Illinois.

1870 census of Wright Co., Minnesota, Stockholm precinct, enumerated 17 Aug, lists on pp. 10-11 as family #69/70:
Pettis, Samuel P., 49, farmer, b. Ky; Laura, 48, b. Ind; // page break // Pettit, Jonas A, 21, farmer; Samuel, 19; Rachel, 18; Frances, 16; Laura, 14; Roder, 12. All children born in Illinois.

1875 Minnesota state census, Wright Co., town of Stockholm, enumerated 15 June, lists on p. 463 as family #114:
Samuel Pettit, 54, b. Ky Ky Ky; Luana, 49, b. Ind Ireland (or Iceland) Germany; Richard, 24; Richlean (f), 23; Mary, 21; Lora, 18; Jane, 16. All children born Ill Ky Ind.

The household above is headed by their son Jonas.