The Book : "More Palatine Families, Some Immigrants to the Middle Colonies, 1717-1776" p. 87-88. There is a entry concerning Hans Leonhardt Erckenbrecht. It states the the probable orgins of this family were at Daudenzell. An individual Mareiluise Erckenbrecht of Emstal, Germany doing research found the baptismal records for Hans Leonhardt and Hans Georg Erckenbrecht. Their parents: Hans Adam & Anna Catharina Schilling Erckenbrecht.
It has that Hans Georg arrived on the ship "mary" on 26 Sept. 1732 in Phildelphia. I have also seen this is validated in Passengers and Immigration Books. We have not found when Hans Leonhardt arrived yet.