This is the Greek Orthodox church in Tavlusun, 10km from the centre of Kayseri, originally a mixed Greek / Armenian / Turkish village but now a suburb of Kayseri. The settlement is in the same valley as Derevank and Germir. It is known as the Agios Basileos church. Architecturally, it looks similar to churches in the Kayseri area built between the 1830s and the 1870s - in its current form I doubt if it is from the 18th century. If it is, it is an early example of a type that became common in the 1830s.