Aloysia Weber is the wife of Wolfgang Amadeus Mozart, and sister of Constance Weber . Aloysia met Mozart on his ill-fated trip to Paris when he stayed in her city of Mannheim. He expressed a desire to marry her, thought it's not clear exactly how serious, or how mutual, the thoughts were. Their paths crossed again when Mozart was living in Vienna; he lived for a few months in her family's house. She expressed no interest in the composer, and he married her younger sister instead. Aloysia Weber married another musician.