The issue of supposed ancestry tracing to Chinggis Khan is an interesting tidbit that comes up occasionally. This past exchange between /u/Georgy_K_Zhukov and /u/terminus-trantor discusses the rather dubious basis of the original claim, and the even more dubious assertion that Chinggisid blood is widespread owing to mass rape perpetrated during the Mongol conquests. Georgy says much the same here, and brings up the important distinction between male-line descendants and the general population here.