Complex sentence: He settled in Philadelphia, where he opened a cabinet making or furniture shop, making fine furniture for the likes of Stephen Girard and Joseph Bonaparte, Napoleon's brother who lived for a time on his estate, Point Breeze in Bordentown, New Jersey.
Split into simpler sentences: He settled in Philadelphia where he opened a cabinet making or furniture shop. He made fine furniture for the likes of Stephen Girard and Joseph Bonaparte, Napoleon's brother who lived for a time on his estate, Point Breeze in Bordentown, New Jersey.