This text reclaims the significance of Firmilianus of Cappadocian Caearea [d.c.269 C.E] and includes a collection of the surviving testimonia about him. Firmilianus of Cappadocian Caearea [d.c.269 C.E] is a figure of whom we know mostly through other people's references to him. Only one writing by him is extant. It is clear, nevertheless, that Firmilian was a Christian leader of significance in the third century: it was he who led the proceedings against Paul of Samosata. He was at odds with bishop Stephen in Rome, was a contemporary and friend of Origen and of Gregory Thaumaturgus. Allegedly he was influential in the life of Gregory the Illuminator and his letter to Cyprian in Carthage is the only work of his to survive. Firmilian had witnessed persecution and other hardships in Cappadocia and his reputation lived on through statements by Jerome and Eusebius. Yet his name is almost unknown to students of the early church, while those of his contemporaries are familiar. This text reclaims the significance of Firmilian and includes a collection of the surviving testimonia about him.