Franz Xaver Hammer

Franz Xaver Hammer called Marteau (1741 – 11 October 1817) was a German gambist, cellist and composer. Hammer was born in Oettingen in Bayern. From 1771 to 1778, he worked under Joseph Haydn as cellist of the Esterhazy's court ensemble in Eisenstadt and at the Eszterháza palace. It is thought that Haydn composed three cello concertos for him.