Gaya alias Kyjov in Morava may be a colony of the other Kyev in the Ucraine .
Gay'-Rusa mentioned in the folklore of Mordva may therefor be identical with Kyev-Rus . In folk stories this is the place Dubolgo and family lived and reigned in the days of the siege of Kazan in 1552 according to earlier Italia aera beginning in 1349 b.c.,coresponding to 203 of linear counting and to 926 ofthe old Roman aera counted from 723 b.c. and to 1268 of the Norman one done so from 1065 b.c.
Dub-Olgo ,the Erzya chief therefor may be identical with Oleg of Rus and with Hulegu of the Mongol Khaganate involving Mordvin peoples as well. Oleg's son was Ingvar / Igor following him in power until 222 . Ingvar may be a variation of Varing , and also of Ingere ,how Izhor / Izher people are called too . Therefor Igor could be identified with Siyazhar from among the sons of Dubolgo ,whose name may be derived from Svea-Izher that means Swedish Ingerman .
Erzyas,as a people of Finno-Ugrian language in general may descend from A'es-Ze-Nawa alias A'ad-Sab-Er-Gaya-Na son of Ganda after whom the city and town Gaya ,that is Kiev might be named . Kiev though should also bear the name of Ki'i king of Hawai'i .
Jews and christians say 'Ozni,'Etsbeon,Gad .
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Balázs Déri