N an ç ay . ▁It ▁had ▁been ▁acquired ▁by ▁the ▁W itt els bach s ▁with ▁the ▁collection ▁of ▁the ▁anti qu arian ▁Hermann ▁Sch ä del ▁( 1 4 1 0 – 8 5 ) ▁in ▁ 1 5 7 1 . ▁The ▁document ▁was ▁much ▁discussed ▁in ▁the ▁early ▁ 1 9 th - century ▁histor i ography , ▁not ably ▁by ▁Nikol ai ▁Kar am zin ▁and ▁Jo achim ▁Le le wel . ▁ ▁The ▁document ▁contains ▁a ▁list ▁of ▁the ▁tribes ▁in ▁Central - E astern ▁Europe ▁east ▁of ▁the ▁El be ▁and ▁north ▁of ▁the ▁Dan ube ▁to ▁the ▁Vol ga ▁rivers ▁ ▁to ▁the ▁Black ▁and ▁C asp ian ▁Sea ▁( most ▁of ▁them ▁of ▁S lav onic ▁origin , ▁with ▁R uz zi , ▁and ▁others ▁such ▁as ▁V ul g ari i , ▁etc .). ▁Ab sent ▁on ▁the ▁list ▁are ▁Pol ans , ▁P omer ani ans ▁and ▁ ▁Mas ov ians , ▁tribes ▁first ▁of ▁whom ▁are ▁believed ▁to ▁have ▁settled ▁along ▁the ▁sh ores ▁of ▁the ▁W arta ▁river ▁during ▁the ▁ 8 th ▁century , ▁as ▁well ▁D ule bes , ▁Vol h yn ians ▁and ▁White ▁Cro ats , ▁but ▁instead ▁mention ing ▁several ▁unknown ▁tribes ▁hard ▁to ▁identify . ▁There ▁is ▁also ▁some ▁information ▁about ▁the ▁number ▁of ▁strong holds ▁() ▁possessed ▁by ▁some ▁of ▁the ▁tribes . ▁▁ ▁The ▁proven ance ▁of ▁the ▁document ▁is ▁disput ed . ▁Although ▁early ▁comment ators ▁suggested ▁that ▁it ▁could ▁have