Stephen I Kotromanić

Stephen I Kotromanić, called Kotroman (1242–1314), was ban of Bosnia and father of Ban Stephen II. He ruled eastern Bosnia jointly with his brother Prijezda II from 1287, and alone from 1290. In 1284 he married Elizabeth, daughter of Stefan Dragutin of Syrmia.

Amid Hungary's succession wars the Croatian Šubić family overran most of his lands: by 1302 Mladen I Šubić held nearly all of Bosnia, and in 1305 Paul Šubić claimed the whole country.

Mladen's persecution of the Bosnian Church drove some of its adherents to Kotroman's side. Kotroman nonetheless held out, but died in 1314 before he could recover his realm.