Analysis of information sources in references of the Wikipedia article "Timur" in English language version.
isfahan Timur.
Сын бека Тарагая из тюркизированного монг. племени барлас[Son of Bek Taragai from the Turkified Mongol Barlas tribe]
Timur was of both Turkish and Mongol descent and claimed Genghis Khan as an ancestor
First of all, Timur's genealogy gives him a common ancestor with Chinggis Khan in Tumbinai – sechen or Tumanay Khan
The birthdate commonly ascribed to Tīmūr, 25 S̲h̲aʿbān 736/8 April 1336, is probably an invention from the time of his successor S̲h̲āh Ruk̲h̲ [q.v.], the day chosen for astrological meaning and the year to coincide with the death of the last Il-K̲h̲ān
Timur was a member of the Turkicized Barlas tribe, a Mongol subgroup that had settled in Transoxania (now roughly corresponding to Uzbekistan) after taking part in Genghis Khan's son Chagatai's campaigns in that region.