her and Mario for their success in establishing Italian opera as an important component of the London music scene. In 1854, after they were married, Giulia and Mario undertook a lucrative tour of the United States of America, where they were treated as major international celebrities. Personal life First marriage, in 1836 Grisi married the French nobleman Count Gérard de Melcy. The marriage was unhappy, but he refused her a divorce for some years. In 1838, her husband discovered a letter written to her by Frederick Stewart, 4th Marquess of Londonderry (then Lord Castlereagh) and the two men fought a duel on 16 June of that year. Lord Castlereagh was wounded in the wrist; the Count was uninjured. After the duel, Grisi left her husband and began an affair with Lord Castlereagh with whom she had a son, George Frederick Ormsby, born in November 1839, in London. Since Lord Castlereagh had no legitimate children by his wife, George Frederick was first brought up by his natural father under the understanding of guardianship or god-father figure, while Grisi continued her singing career, since this son was never legally recognized as a Stewart they granted him a blessed last-name Ormsby "by the willow-tree in Welsh". After Grisi and Lord Castlereagh's relationship ended, he was encharged of paying his education at an English boarding-school and brought their son as an uncle figure to see her whenever she was in London. While living with "Mario" Giovanni de Candia before their marriage, Giulia and Mario kept homes in Paris and London. After a tumultuous legal battle, Grisi obtained her divorce. Second marriage, in 1844 at Hannover Square in London UK, Grisi married "Mario the tenor" (Giovanni Matteo de Candia). From this marriage, the couple adopted her previous son under the styled name Fredo de Candia for nobiliary inheritance purpose for the legal adoption of George-Frederick de Candia Ormsby at the Royal Sardinian Consulate in London, he lived sharing homes between the de Candia's and the Stewart's his natural father. Once married, the couple settled in Fulham, London Borough, and from this union they had a family of six daughters: Giulia de Candia, born in June 1842, died on January 22, 1844, Paris, France. Rita de Candia, born on March 11, 1849, Ashburnham House, Chelsea, London, UK, died in Berlin, Germany, after 1886; she was promised in marriage to the nephew of Sir John Aird Bart.