Complex sentence: Antonio Giuglini (1827--12 October 1865) was an Italian operatic tenor who during the last eight years of his life was one of the leading stars of the operatic scene in London.
Split into simpler sentences: Antonio Giuglini (1827--12 October 1865) was an Italian operatic tenor. During the last eight years of his life, he earned renown as one of the leading stars of the operatic scene in London.