Alexander Zemlinsky or Alexander von Zemlinsky (14 October 1871 – 15 March 1942) was an Austrian composer, conductor, and teacher.Zemlinsky was born in Vienna to a highly diverse family. Zemlinsky's grandfather, Anton Semlinski, emigrated from Žilina, Hungary (now in Slovakia) to Austria and married an Austrian woman. Both were from staunchly Roman Catholic families, and Alexander's father, Adolf, was raised as a Catholic.