Fredrick Co. MD comes up iin my research too, however, earlier than 1830, by that time my Fouches had moved to Holmes Co. OH.Maybe some of my older info will match up with your Peter's parents or Grandparents.
John Fouch married Catharine Specht may 28, 1787 at Evangelical Lutherine Church, Fredrick Co. MD Son David born May 26, 1798 Fredrick Co. Md.John's Parents, John Fouch, b. 1730 Louden Co. VA d. 1771, Married Susanah Mobley. Parents may be Hugh Fouch, b. 1696 d. 1780 married Mary Perkins in 1720.
I am still working to verify this info, I am sure of everything from David Fouch to present, and reletively sure of the info on John and Catharine, So do not discount info that doesn't exactly match up at this point, (just pass it on, Maybe we can help each other.