The Realm of Stefan Dragutin () was a medieval Serbian kingdom. Initially, it was a vassal kingdom of the Kingdom of Hungary, but subsequently became an independent kingdom, after the collapse of the central power in the Kingdom of Hungary. It was ruled by the Serbian kings Stefan Dragutin (1282–1316) and his son Stefan Vladislav II (1316–1325). The kingdom was centered in the region of Lower Syrmia (today known as Mačva) and its first capital was Debrc (between Belgrade and Šabac), while residence of the king was later moved to Belgrade. Territory In the Middle Ages, "Syrmia" was the name for a larger area around the river Sava. The part in the north of Sava was known as Upper Syrmia (present-day Syrmia), while the area south of the river was known as Lower Syrmia (present-day Mačva). The kingdom was centered in Mačva, but also included Belgrade, part of Šumadija with Rudnik, and the župas (counties) of Podrinje, Usora, Soli, Braničevo and Kučevo. According to several Serbian historians (Dejan Mikavica, Stanoje Stanojević, Aleksa Ivić, Milojko Brusin, etc.), the kingdom also included Upper Syrmia (modern Syrmia). History Stefan Dragutin was initially the king of Serbia from 1276 to 1282. In 1282, he broke his leg while hunting and became ill; he passed the throne to his younger brother Stefan Milutin at the council at Deževo in 1282, while keeping for himself some northern parts of the country (Rudnik and parts of the župa of Podrinje). Since his son Vladislav married a relative of the Hungarian king, Dragutin in 1284 gained from Ladislaus IV the banates of Só (Soli), Ózora (Usora) and Macsó (Mačva) with Belgrade. He first ruled them as a Hungarian vassal, until the collapse of the central power of the Hungarian Kingdom. The first capital of his state was Debrc, and later he moved his residence to Belgrade. Dragutin was the first Serbian ruler to use Belgrade as his capital. Around 1291 and with the help of Milutin, Dragutin expanded his territory by annexing the regions of Braničevo and Kučevo, whose former rulers Darman and Kudelin had recently become independent from the Kingdom of Hungary. For the first time, these regions became part of the Serbian state. This action probably caused the war between the Bulgarian despot Shishman of Vidin and Milutin. Towards the end of his life, Stefan Dragutin broke away from his Hungarian allies and strengthened his ties