Complex sentence: Alexandre Clement Leon Joseph Luigini was born in Lyon in 1850, his grand-parents having moved there from Modena, Italy when his grandfather took up the post of trumpeter with the orchestra of the Grand-Theatre.
Split into simpler sentences: Alexandre Clement Leon Joseph Luigini was born in Lyon in 1850. His grand-parents moved there from Modena, Italy, when his grandfather took up the post of trumpeter with the orchestra of the Grand-Theatre.