besieged by the Goths, [90];
taken by Baduila, [94];
Gregory the Great at, [120];
Constans II. at, [169];
Charles the Great at, [199]
Ruric, founds the Russian kingdom, [234]
Russians, early invasions of, [216];
attack Bulgaria, [234];
defeated by John Zimisces, [237];
converted to Christianity, [239]