The Battle of Southern Buh occurred near the banks of the eponymous river (today in Ukraine). The result was a great Bulgarian victory which forced the Magyars of the Etelköz realm to abandon the steppes of southern Ukraine, Zlatarski, V. Istorija na parvoto balgarsko carstvo, pp. 311-312, . Constantin Porphyrogen, ibid., p. 173 (2–10), Symeon Logothet, ibid., p. 773 (19–22), Leo Grammaticus, p. 268 (19–22), Theophanes Continuatus, p. 359 (10–22), Skylica—Cedrin, II, p. 256 (8–11), Zonaras, IV, p. 411–3, Dummler, III, pp. 444—445. as well as their aspirations of subduing Danube Bulgaria, retreating to the newly occupied lands beyond the Carpathian Mountains, centering on Pannonia, from where they will stage their next war, against Moravians this time, defeating them and establishing a new Hungary, after the Etelköz state in modern Ukraine, which succeeded an earlier stage of statehood for the Magyars, the legendary although short-lived Levedia, and even one before that, in the actual country of origin for the Magyars, Yugra, beyond river Ob.
