Hi went back and found what I have. Children of Jacob Acker born 1739 married Eberhartine Heisler are;Christian, born Dec 25, 1755, according to PA Archives, served in the Rev. National Archives has no record for him: Philip Jacob born Aug. 30, 1757; John Leonhart born Sept 22, 1752 ?; George Henry boorn Dec 10, 1761; Daniel (no birth date) Michael born Dec. 25, 1766; John no birth date, and two daughters.
Now you see where John Leonhart (1752), they history states, Jonathan ( could this be John Leonardt)the oldest son of Jacob, married Sallie Schaeffer, well the question to be answered is who is Sallie Shaeffer, well when I get a chance, I will see if I can find out, but what I do know another member of the Shaeffer family married an Acker. Albert Shaeffer, married Agnes Schuler, d/o Israel and Mary A. (Acker) Schuler of Berks County, he (Israel died in 1874).
Henry (George Henry) married Sallie Hartman, settle in Ohio near Akron, he died at age 84 and they had sons and dauthers. but interest stops when they leave the state.
Michael, born 1766, the youngest son of Jacob married Mgt Stettler, he was born at Macungie and died at age 44.
Daniel son of Jacob was born after 1761 but before 1766, he married May 21, 1793, to Margaretha Schmidt, (lived in Weisenburg)
Daniel, I guess the son of Daniel, was born in Weisenburg, April 20, 1792 and died near his home in Wescoesville March 1, 1844 as a result of an accident. He married in 1818 to Christiana Wuchert, of Heidelberg township and had 5 sons and two daughters.