Original sentence: Kaloyan or Kalojan (), also known by his Vlach name Johannitsa or Ioannitsa ( 1170 – October 1207), was Tsar of Bulgaria from 1196 to 1207
Edited sentence: Kaloyan or Kalojan (), also known as Johannitsa or Ioannitsa ( 1170 – October 1207), was Tsar of Bulgaria from 1196 to 1207