Percilla age 42 lives in 1860 with Henry age 45 and Christiana (Henry's mother) age 77 in Washington Township (Freeburg). You would think she was the wife of Henry, but she is listed third in the household and that just was not the convention.

I have simply added her as a sister of Henry and daughter of Maria Christiana -- but it may simply be a nickname for one of Maria Christiana's other known daughters.