 Residual elements of these tribes, ancestors of the Jasz people, remained behind in the central North Caucasus, mingling with Caucasian peoples to form the present-day Ossetes.The Jasz people came to the Kingdom of Hungary, together with the Cumanians ( people) when their lands to the east, in some in the later Moldavia (see Iași and Jaszvasar) were invaded by the Mongol Empire in the mid-13th century.They were admitted by the Hungarian king, Béla IV Árpád, who hoped that the Jaszs would assist in resisting the Mongol-Tatar invasion.