Complex sentence: Born in Freiburg, Germany as the son of Samuel Dreyfuss, an U.S. citizen since about 1861, in 1881 he emigrated to the U.S., where he lived and worked with the Bernheim family in Paducah, Kentucky.
Split into simpler sentences: Born in Freiburg, Germany as the son of Samuel Dreyfuss, an U.S. citizen since about 1861. In the US he lived and worked with the Bernheim family in Paducah, Kentucky.