Friedrich von Flotow (27 April 1812 – 24 January 1883) was a German classical composer. He was born in Teutendorf, in Mecklenburg, and died in Darmstadt at the age of 70. Von Flotow is mostly remembered for his opera [i]Martha[/i].
http://en.wikipedia.org/wiki/Friedrich_von_Flotow
https://adp.library.ucsb.edu/names/104273