Michael William Balfe (1808-1870), rose to fame in London in 1835 immediately after the premiere of his first opera, The Siege of Rochelle . For the next thirty-five years this unique Dublin born musician was destined to be the most important operatic composer in Victorian Britain. He was to music in Victorian Britain what his renowned contemporary, Charles Dickens was to literature. The popularity of their respected works reached far beyond London, Dublin and New York in the English speaking world. Balfe also personally achieved great success in places such, Paris, Vienna, Berlin, Bologna, Palermo, Trieste and St. Petersburg in Russia. In all, he composed twenty-eight operatic works over his lifetime. However, when his French, Italian and German language versions are added, he actually can be credited with forty-three operas. For over fifty-years his opera, The Bohemian Girl swept around the globe with great success having been translated into many different languages. This definitive biography took seven years of international research and is long overdue. It corrects many anecdotal errors of previous books. It documents Balfe the man, his work, his descendents, his legacy and influence. The biography unearths many new facts about this important Victorian composer, his music, his family, and his role as a music director at London’s Italian Opera House, where he directed the local premieres of several Verdi operas. It lists all of his operas with premiere casts and the principal arias. It also identifies, the current location of all known Balfe’s scores and music, including his early Italian compositions which have been deemed ‘lost’ by most scholars.