Mozart had one older sister, Anna, called “Nanderl”. When they were children, the were close, and they performed together on the piano. After Wolfgang moved to Vienna, the did not see each other that much but kept regular correspondence. read more
Let me start this off by saying that I kniw him personally, as a friend. I've been to many a dinner at his house (s) and some of the time, his siblings were there. read more
Marianne was the subject of a 2001 "biography in poems," The Other Mozart by Sharon Chmielarz. Mozart's Sister, a 2005 novel by Alison Bauld, follows Nannerl Mozart's life through marriage, children, widowhood, and death in conversations with her nephew Franz Xaver, Mozart's younger son. Nancy Moser wrote Mozart's Sister: A Novel (2006). read more