Complex sentence: In 1846 the family moved to Trenton, New Jersey where Gregory made a substantial fortune as one of the organizers of the Trenton Gas Co. Ion lived the careless life of a dilettante until the American Civil War.
Split into simpler sentences: In 1846 the family moved to Trenton, New Jersey where Gregory Perdicaris became wealthy as one of the organizers of the Trenton Gas Company. His son Ion lived the life of a dilettante until the American Civil War.