Hi there, I am also a direct descendent of Christian and Penenah, via their son Joseph S. Miller. Limited info on them both, I have his birth at about 1798 in PA, probably around East Pennsboro, Cumberland County. I believe he must have died sometime between 1852 and 1860. His wife at the time was Dorothy Miller who was born in 1810 and died in 1880 in Harrisburg, PA.
Could you email me at firstname.lastname@example.org
, would love to share some info