The Unitas Fratrum or Church of the Brethren arose in the fifteenth century in Bohemia and Moravia. In 1727 intolerance led its leaders to begin to plan an emigration to America. A colony was sent to Pennsylvania in 1734, while a second colony went to Georgia in 1735. Late in the year 1740 the remnant of the emigrants to Georgia joined forces with the Pennsylvania contingent, and settled on five thousand acres of land in the “Forks of the Delaware,” as the locality just within the confluence of the Delaware River and the Lehigh or “West Fork of the Delaware” was called. The object of the settlers was to preach to the Indians, and they began at once to win the confidence of the Delawares.

The first house was built in 1741. This was twenty by forty feet, one story high, with sleeping quarters for a number of persons in the attic under the steep pitched roof. The cattle were kept in a portion of the house partitioned off for them. The common room in which they lived was also the place of worship for more than a year. The site of this house is marked by a memorial stone, which was put in place in 1892.

The foundation for the Gemeinhaus, or Community House, was laid in September. For many years this was to serve as home and hospice, manse and church, administration office, academy, dispensary, and town-hall. As “The House on the Lehigh,” it became known through all the countryside.