Complex sentence: In December 1834, Fisher married James Gaspard Maeder (1809-1876), a composer and vocal coach who wrote an opera for her entitled "Peri, or the Enchanted Fountain".
Split into simpler sentences: In December 1834, Fisher married James Gaspard Maeder (1809-1876), a composer and vocal coach. Maeder wrote an opera for her entitled "Peri, or the Enchanted Fountain".