Charles Pemberton Fox
The son of George Fox, one of Franklin's Quaker associates in Philadelphia, Charles Fox and his sister, Mary Pemberton Fox, inherited from their father a massive amount of the papers of Benjamin Franklin.

On Franklin's death the documents had been packed up and removed from the Franklin Court Mansion House to the Fox estate, "Champlost," north of Philadelphia. They were stored in anticipation of William Temple Franklin's incorporating them into a new edition of his grandfather's autobiography. But Temple never called for them.

Following Temple's death in 1823, George Fox was given formal ownership of them. On his death, his children inherited them.

In 1840 Charles and Mary Fox presented most of them to the American Philosophical Society.