Ulrich and Baltzer Mohn quite probably were related. They both settled in the eastern part of Berks County ,PA. Their descendants are not very well known and not very numerous. One of them only had a daughter named Elizabeth who survived. I do not know of any connection at this time to John Mohn who settled in Cumru and what later became Spring Township in Berks County.Many people from Langenselbold settled in what was Heidelberg now Lower Heidelberg Township in Berks county. Many of them worshipped at St. John's (Hain's) German Reformed Church.