The Chronicon Varadiense names "primus…dux Henricus…secundus dux Andreas…tertius dux Salamon et quartus…dux Stephanus" as the four sons of "rex Bela tertius filius Geysæ". The Chronicle of Alberic de Trois-Fontaines names (in order) "Haymericum et Andream…et duas reginas Constantiam de Boemia et Margaretam de Grecia" as children of "rex Bela de Hungaria" & his wife Agnes.
He succeeded his father in 1196 as IMRE King of Hungary and Croatia. The Gesta Hungarorum records that "Emiricus filius eius" succeeded his father. "Henricus…Hungariæ, Dalmatiæ, Croatiæ, Ramæ, Serviæque rex", after recording that his father King Béla III had granted land "a latere ducatus Sclauoniæ, iuxta Podgoriam et Goritiam" to "quemdam nobili de Teutonia…Albertum de Michouo" who abused his power, appointed "Stephanus, Nicolai filius…ortum de genealogia Vrsinorum comitum, ac senatorum urbis Romanæ" who had married "dominum Hermannum de Goritia in partibus Karinthiæ…filiam" to control the oppression of the people of "antedicti ducatus Sclaoniæ" by charter dated 1197. He was recognised as overlord of Serbia by Grand Župan Vukan in 1202 after the latter deposed his brother Stefan, and added "King of Serbia" to his titles, although the charter dated 1197 quoted above shows that King Imre had already added the title by then. In order to recapture Zara in Dalmatia, which had recently fallen into Hungarian hands, Enrico Dandolo Doge of Venice arranged with Bonifazio Marchese di Monferrato, leader of the Fourth Crusade, for the crusaders to recapture the city for Venice on their way east, which they did 15 Nov 1202. Kalojan Tsar of Bulgaria annexed Beograd, Branicevo/Barancs and Vidin from Hungary in [1204]. Pope Innocent III intervened by ordering King Imre not to counter-attack, Kalojan having promised to recognise papal suzerainty over Bulgaria in return for a crown.
The Chronicon Zagrabiense records the death "II Kal Dec" in 1204 of "Emericus filius regis Bele" and his burial "in Agria". The Chronicon Dubnicense records the death "Kal Dec" in 1200 of "Emericus" and his burial "in ecclesia Agriensi". 1