'Tartarestan', says Lorenzo: from the river Tartar
Editorial contextHere Katib Celebi reports what the European geographer he calls 'Lorenzo' wrote: the second part of Asia, beyond the Imaus mountains, is Tatarestan (Tartary). Its people are Mongol Tatars who have spread over most of Asia. Their origin is a river named Tatar, from which they took their name, and they were formerly known as Mongols. He is translating a European atlas (Mercator-Hondius), so this is the European 'Tartary' coming back into an Ottoman book.
The second part, which lies beyond the Imaus mountains, is Tatarestan. According to Lorenzo's account, they are Mongol Tatars who spread over most of Asia … These are the original Tatars, who took their name from a river called Tatar, and were known by the name Mongal.
Working translation
Original wording
قسم ثانی که ایماوس طاغلرندن اوته اولان تاتارستاندر لورنسو تحریری اوزره انلر مغول تاتارلری اولوب آسیانك اکثرینه یایلدیلر ... بونلر تاتار اصلیدرکه تاتار نام ارماقدن اسم اخذ ایتدیلر ومونغال دیمکله معروف یرکه
About Mongol Tatars
Keep in mind
Second-hand from European atlases; the 'river Tatar' etymology comes from medieval European writers, not steppe tradition. 'Lorenzo' may be a Latin atlas author as rendered by Katib Celebi's translator.
Transcribed from the page image (corpus OCR of this facsimile is garbled).