Complex sentence: His son Charles, known as Charles Carroll of Annapolis, maintained and expanded the family fortune, and his grandson Charles Carroll of Carrollton would achieve the restoration of political rights his grandfather had so desired, becoming the only Catholic to sign the Declaration of Independence.
Split into simpler sentences: His son Charles, known as Charles Carroll of Annapolis, maintained and expanded the family fortune. His grandson Charles Carroll of Carrollton would achieve the restoration of political rights his grandfather had so desired, becoming the only Catholic to sign the Declaration of Independence.