Henry Hedworth, who applied it to the teachings of Laelio Sozzini and the Polish Socinians. Unitarian churches were formally established in Transylvania and Poland (by the Socinians) in the second half of the 16th century. There, the first doctrines of religious freedom in Europe were established (in the course of several diets between 1557 and 1568, see Edict of Torda) under the jurisdiction of John Sigismund, King of Hungary and Prince of Transylvania, the only Unitarian monarch. The early Unitarian church not only rejected the Trinity, but also the pre-existence of Christ as well as, in many cases, predestination and original sin as put forward by Augustine of Hippo, and the substitutionary atonement of Christ developed by Anselm of Canterbury and John Calvin. There were several different forms of Christology in the beginnings of the Unitarian movement; ultimately, the dominant Christology became psilanthropism: that Jesus was a man, but one with a unique relationship to God. Britain Influenced by the teachings of the Polish Socinians, Samuel Clarke (1675–1729) revised the Book of Common Prayer, removing the Trinitarian Nicene Creed and references to Jesus as God. Theophilus Lindsey also revised the Book of Common Prayer to allow a more tolerant, free Unitarian interpretation. Neither cleric was charged under the Blasphemy Act 1697 that made it an "offense for any person, educated in or having made profession of the Christian religion, by writing, preaching, teaching or advised speaking, to deny the Holy Trinity". The Act of Toleration (1689) gave relief to English Dissenters, but excluded Unitarians. The efforts of Clarke and Lindsey met with substantial criticism from the more conservative clergy and laity of the Church of England. In response, in 1774, Lindsey applied for registration of the Essex House as a "Dissenting place of worship" with the assistance of barrister John Lee. On the Sunday following the registration—April 17, 1774—the first true Unitarian congregation discreetly convened in the provisional Essex Street Chapel. In attendance were Lee, Joseph Priestley and the agent of the Massachusetts Colony, Benjamin Franklin. Priestley also founded a reform congregation, but, after his home was burned down in the Priestley Riots, fled with his wife to America, where he became a leading figure in the founding of the church on American soil. Once laity and clergy relaxed their vehement opposition to the Doctrine of the Trinity Act 1813, which finally allowed for protections of dissenting religions, the British