The Lorentz family of Niederhausen you refer to was researched from the church records there using LDS microfilms by me about 4 years ago. I spent three months and hundreds of hours reading the records, sorting the thousand or so Lorentz entries, putting them into family groups and typing them into my computer genealogy program. I believed my ancestor, Johannes Lorentz, (John Lawrence) who arrived in Philadelphia on the same ship, Edinburgh in 1748, as the three Lorentz siblings from Niederhausen, were related to them. I even made a trip to Niederhausen in 2002 and recruited two local Lorenz men to take DNA tests, and also a known Lawrence descendant of Johann Philip Lorentz, here in the U.S. Those three all matched closely enough to prove a relationship to each other, but my 4th cousin and I both have distinctly different DNA from them and are not related to them. I put all my work on this family on the internet for those who are related to that family to freely use. I have not worked on the Niederhausen Lorentz genealogy since then for obvious reasons. I still don't know where in Pfalz, Rhineland, Germany, my Lorentz ancestor originated.