 André Koechlin (1789–1875) was a grandson of Samuel Koechlin and the son-in-law of Daniel Dollfus-Mieg, head of the Dollfus-Mieg textile company.Under his lead, between 1818 and 1826, the company became the leading textile company of Mulhouse.Turning in 1826 to the building of machinery for the textile industry, Koechlin became knowledgeable in the fabrication of steam machines and started making railroad equipment.