Denial of the virgin birth of Jesus is found among various groups and individuals throughout the history of Christianity. These groups and individuals often took an approach to Christology which understands Jesus to be human, the literal son of human parents. During the 19th century this view was sometimes called psilanthropism, a term which derives from the combination of the Greek (psilós), "plain", "mere" or "bare", and (ánthrōpos) "human". Psilanthropists then generally denied both the virgin birth of Jesus, and his divinity. Denial of the virgin birth is distinct from adoptionism, and may or may not be present in beliefs described as adoptionist. Early Christianity The group most closely associated with denial of the virgin birth were the Ebionites. However, Jerome does not say that all Ebionites denied the virgin birth, but only contrasts their view with the acceptance of the doctrine on the part of a related group, the Nazarenes. The view was rejected by the ecumenical councils, especially in the First Council of Nicaea, which was convened to deal directly with the nature of Christ's divinity. Pagan and Jewish accounts In the 2nd century, the Greek philosopher Celsus claimed that Jesus was the illegitimate son of a soldier named Panthera. The same claim is made by the medieval Jewish text Toledot Yeshu. Reformation The turmoil of the Reformation gave rise to many radical groups and individuals, some of whom were accused of denying, or actually did deny, the virgin birth. For example, during the trial of Lorenzo Tizzano before the Inquisition at Venice in 1550, it was charged that the circle of the late Juan de Valdés (died 1541) at Naples had included such individuals. Early Unitarians, often called Socinians, after Laelio Sozzini who first published the first unitarian analysis of John's Logos in 1550, were sometimes accused of denying the virgin birth, but mainly only denied the pre-existence of Christ in heaven. For Sozzini's better known nephew Fausto Sozzini the miraculous virgin birth was the element in their belief which removed the need for the pre-existence to which they objected. The Socinians in fact excommunicated from their number the translator of the first Bible in Belarusian, Symon Budny, for his denial of the virgin birth. A large scale change among Unitarians to acceptance of a human father for Jesus took place only in the time of Joseph Priestley. The young Samuel Taylor Coleridge was an example of