Gregory Thaumaturgus was a third-century Christian bishop of Neocaesarea, located in modern-day Niksar. Born around 213 to a wealthy pagan family, he was originally named Theodore before converting to Christianity at age fourteen. He studied under the scholar Origen in Palestine, where he developed a deep interest in combining Greek philosophy with Christian theology. After returning to his home region, he was consecrated bishop at age forty, a position he held for three decades, during which he was widely recognized for his missionary work and perceived miraculous abilities.