1810 Berks Co, PA. At census time he was listed as Peter Herchberger, age 16-25 with a family consisting of 1 female under 10, 1 also 16-25, and one over 45 (who?). In the same county were his parents.
1820 Wayne, Mifflin Co, PA. Before the next census Peter had moved the family a couple of counties west. Counted there were 2 males age10-16, 1 at 16-25, Peter and another male were 26-45, 1 female age 10-16, and 1 at 26-45. Two were engaged in agriculture. Brother David was in the same county.