German family of musicians. The most celebrated members were Fridolin (1733-79), a singer and violinist at Mannheim; his brother Franz Anton (1734-1812), a composer, violinist, Kapellmeister at Eutin and travelling theatrical manager, the father of Carl Maria Von Weber; and his daughters Josepha (1758/9-1819), the dramatic soprano for whom Mozart wrote the Queen of Night role in Die Zauberflöte, Aloysia (1759/61-1839), also a soprano, for whom Mozart wrote concert arias, and Constanze (1762-1842), who married Mozart. Carl Maria had two half-brothers, Fridolin (1761-1833), a violinist in the Esterházy orchestra, and Edmund (1766-1828), a minor composer active at Würzburg, Berne and Lübeck.