If it has been verified that David Hetzler is the son of John Hetzler and Rosanna Cox, then I can provide their ancestors.I have John Hetzler b. 12/21/1790 married to Rosanna Cox.John was the son of Jacob Hetzler b. 1758 in Lancaster PA., d. 08/19/1850 and was buried in the Old Hetzler Cemetery in Hamilton Co. Ohio. Jacob moved with his family from Centre County PA to Madiera, Hamilton Co, Ohio betweenJune 1795 and December 1797. Jacob married Anna Elizabeth Bolander in 1788.
Jacob was the son of Johan Balthasar Hetzler b. 1728 in Wurttemburg, Germany, d. 08/23/1818 in Aaronsburg, PA. He was married to Ann Barbara Dohm b. 1734, d. 1794.They were married 11/09/1755 in Heidelburg, PA. Johan Balthasar Hetzler's father was Johan Georg Hetzler.This information is based on research by Gliff Hetchler of Rowlett, Texas.I would be happy to share details on this information and would be interested in more recent information on the line of David Hetzler and Mary Thornell.