Kaloyan of Bulgaria
During the People's Crusade, on July 3, 1096, Peter the Hermit clashed with Byzantine forces at Naissus. Manuel I fortified the town, but under his successor Andronikos I it was seized by the Hungarian king Béla III. Byzantine control was eventually reestablished, but in 1185 it fell under Serbian control. By 1188, Niš became the capital of Serbian king Stefan Nemanja. On July 27, 1189, Nemanja received German emperor Frederick Barbarossa and his 100,000 crusaders at Niš. Niš is mentioned in descriptions of Serbia under Vukan in 1202, highlighting its special status. In 1203, Kaloyan of Bulgaria annexed Niš. Stefan Nemanjić later regained the region.