Complex sentence: Jules Merle, Clotilde Merlo's grandfather, was born in 1806,he had a illegimetate son his name was Giovanni Merlo born in 1859, Clotilde (Giovanni's daughter) married Carlo Ballare', and he was born in 1875.
Split into simpler sentences: Jules Merle, Clotilde Merlo's grandfather, was born in 1806. Clotilde married Carlo Ballare', and he was born in 1875.