Keskin is a town and district of Kırıkkale Province in the Central Anatolia region of Turkey. At the 2000 Turkish census, the population of the district was 59,150, of whom 34,827 lived in the town of Keskin.HistoryIn the times of the Roman and Byzantine, the city was called Ciscissus (sometimes shortened to Cissus) and belonged to the Roman province of Cappadocia Prima. It became a Christian bishopric, a suffragan of the metropolitan see of Caesarea in Cappadocia, the capital of the province. The names of two of its bishops are known from extant contemporary documents: Plato was at the Trullan Council of 692, and Soterichus at the Second Council of Nicaea in 787. No longer a residential bishopric, Ciscissus is today listed by the Catholic Church as a titular see.