Philip Schaff

“ The following treatise on Re-baptism has been attributed by some authorities to the pen of one Ursinus, [2] a monk, who is said to have written in the fourth century. But internal evidence seems to point to a bishop as having been the writer; [3] and it seems very probable that it was written while the baptismal controversy was still agitating the Church, from the manner in which he refers to it. Moreover, the bitter attack contained in the first chapter was probably levelled against Cyprian, as the leader of the party in favour of the re-baptism of heretics. ”