man - beg ), ▁T atar ▁prince ▁(" beg " ▁also ▁" k ny az "), ▁ancest or ▁of ▁many ▁Lip ka ▁T atar ▁families . ▁ ▁It ▁is ▁not ▁known ▁what ▁was ▁his ▁real ▁name ▁- ▁the ▁expression ▁" Na iman ▁Beg " ▁is ▁not ▁a ▁name ▁but ▁a ▁title ▁that ▁means ▁" Pr ince ▁of ▁Na im ans ". ▁This ▁title ▁implies ▁that ▁he ▁was ▁relative ▁to ▁k han ▁dynast y ▁r uling ▁in ▁Mong ol ▁Empire . ▁ ▁It ▁is ▁probable ▁that ▁Na iman ▁Beg ▁was ▁a ▁desc endant ▁of ▁J eb e , ▁one ▁of ▁G eng his ▁Khan ' s ▁chief ▁command ers , ▁that ▁defeated ▁Na im ans ▁and ▁incorpor ated ▁them ▁to ▁the ▁G eng his ▁Khan ’ s ▁Empire ▁at ▁the ▁beginning ▁of ▁the ▁ 1 3 th ▁century . ▁For ▁this ▁de ed ▁he ▁was ▁reward ed ▁just ▁with ▁a ▁her edit ary ▁title ▁of ▁" Na iman ▁Beg " ▁as ▁it ▁was ▁pract iced ▁in ▁Mong ol ▁Empire . ▁ ▁Na iman ▁Beg ▁came ▁to ▁the ▁Grand ▁Duch y ▁of ▁Lith u ania ▁at ▁the ▁beginning ▁of ▁the ▁ 1 5 th ▁century ▁as ▁a ▁member ▁of ▁an ▁excellent ▁fellow ship ▁of ▁T atar ▁nob ility ▁under ▁the ▁command ▁of ▁J al al ▁ad - D in , ▁the ▁future ▁( short - time ) ▁k han ▁of ▁the ▁Golden ▁Hor de . ▁They ▁came ▁to ▁help ▁the ▁Lith uan ian ▁Grand ▁Prince ▁V y ta ut as ▁the ▁Great ▁in ▁his ▁war