Jonathan Tutwiler and his 2nd wife Julia are there in 1850. 1860 and 1870, living in the Harrisonburg area. The problem is Mary, listed only in 1850, as age 3. I believe that she married Charles W. Spates of Loudoun Co., in about 1865/66.
I had hoped to make contact with a family member or descendant with information on Mary beyond what I've been able to find on-line.
I believe it was common practice among the German families to send their teenage children to relatives for apprenticeships or even to help with household chores. Possibly this was the case with Mary.