Quakers and Calvinism have had a long and difficult relationship. The Quakers appeared in England during the difficulties between the Puritans, the Anglicans, and the Roman Catholics, and as each group struggled for political ascendancy, the Quakers ended up being persecuted by each in turn. The Quakers killed in Boston in the 1650s were done in in the name of Calvinist Christianity. Today, many of the disputes seem dated, but not all, of course.
