Are there any birth records for Lebanon County during the mid 1700s? I have found Georg Harter/Herder married Eva Bracker (1752) at the St. Paul's Lutheran church in Lehigh County, and their oldest son's birth (1753) was recorded in the same church records. There is no further record of this family in Lehigh County. The next solid record I have found of them is their 1769 appearance in the Fredrick County, MD church records along with Christian, Georg, Christina, Adam, Frantz, Jacob, Conrad, Elizabeth, Magdalena, Dorothea, and Catharina.
I found in the Tulpehocken church records that in 1760 a Georg Harter and wife witnessed a baptism. This made me look at Berks County, but there were no Harter/Herder births there.

Nest step, I guess is to look at Schulkill and Lebanon Counties, since Tulpehocken is in the NE corner of Berks.