 His grandson Hartmann Koechlin (1572–1611) was the first of the Koechlins to move to Mulhouse, then called "Mülhausen".In 1745, Samuel Koechlin (1719–1776), together with Jean-Henri Dollfus and Jean-Jacques Schmaltzer, started a cloth printing firm in Mulhouse.Dollfus left the company in 1765 to start his own firm.