Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Descent from Genghis Khan is traceable primarily in Central Asia. His four sons and other immediate descendants are famous by names and by deeds. Later Asian potentates attempted to claim descent from the House of Borjigin even with flimsy grounds. In the 14th century, valid sources all but dry up. With the recent popularity of genealogical DNA testing, a wider circle of people started to claim descent from Genghis Khan. The first and foremost problem is the paternity of Genghis''s eldest son, Jochi, whose recorded progeny is far more copious than that of Ögedei, Chagatai, and Tolui, taken together. The name of Jochi is translated as " Guest". The Secret History of the Mongols relates that the boy was sent to Genghis by Chilger, who had kidnapped and raped his first wife, keeping her in captivity for about a year. According to the Secret History, the brothers of Jochi expressed doubts as to his paternity, but these were denied by Genghis himself.