Complex sentence: Sir Giovanni Matteo De Candia was born in Cagliari on October 17th, 1810, he came from an aristocratic family that belonged to Sardinia's social elite part of the Kingdom of Savoy-Sardinia.
Split into simpler sentences: Sir Giovanni Matteo De Candia was born in Cagliari on October 17th, 1810. He came from an aristocratic family that belonged to Sardinia's social elite, part of the Kingdom of Savoy-Sardinia.