Final answer:
The Proprietary Party consisted of the Penn's family and agents who helped William Penn govern the colony of Pennsylvania.
Step-by-step explanation:
The Proprietary Party consisted of the Penn's family and agents. William Penn, the founder of Pennsylvania, was granted a charter by King Charles II, which gave him the authority to govern the new colony as he saw fit. The Proprietary Party included Penn's family and agents who helped him administer the colony.