Complex sentence: John Penn (February 29,1700--October 25,1746), a proprietor of colonial Pennsylvania, was the eldest son of the colony's founder, William Penn, by his second wife, Hannah Callowhill Penn.
Split into simpler sentences: John Penn (February 29,1700--October 25,1746) was a proprietor of colonial Pennsylvania. He was the eldest son of the colony's founder, William Penn, by his second wife, Hannah Callowhill Penn.