Christoffell Schlencker came to Philadelphia on the 19th of September 1753 aboard the Ship "Leathley" with his six year old son Johannes. Also on the ship were Friedrich Wilhelm and Frans Heinrich Schlencker. They are believed to be Christoffell's brothers. Christoffell was born in 1715, perhaps Baden-Wurttenberg, Germany. I have been told that there is a high concentration of Schlencker families in Schwennigen. Johannes Schlencker who was born in 1747 was a Revolutionary soldier. There is also a spelling of Schlenker and Slanker, etc. names.