Susanna married Peter Siegfried. (Peter Siegfried was born in 1756-1774.)
Pennsylvania Archives, Volume 6, Egypt Reformed Church Records 1734-1807 (http://files.usgwarchives.net/pa/lehigh/church/egyp0001.txt
"Baptismal Record of the congregation on the Lehigh, in which are recorded the names of the children baptized, the names of their parents, and also the names of the sponsors. Commenced March 22, 1739."
J. Henricus Goetschius, M. Helvetico Tigurinus.).