István Árpád

Duke István & his first wife had one child:

-http://fmg.ac/Projects/MedLands/HUNGARY.htm#Istvandied1271
a) [ISTV%C3%81N] (1264-young). The Cronica Fratris Salimbene de Adam refers to, but does not name, the son of "domnus Stephanus filius regis Hungarie" & his first wife who died young[883]

http://genealogy.euweb.cz/arpad/arpad2.html#A2

Géza I King of Hungary (1074-77); *1044/5, +25.4.1077; 1m: ca 1062 Sophie von Looz (+ca 1065); 2m: 1065-74 Synadena (+after 1077), dau.of Theodulus Synadenos and niece of Emperor Nikophorus III of Byzantium. He had issue:

• ...
• A3. [1m.] Álmos, King of Croatia (1091-95), which his father had seized from his brother-in-law King Zwonimir, *ca 1068, +1.9.1127; m.21.8.1104 Predslava of Kiev
  • ...
  • B2. Béla II "Vak" (the Blind) King of Hungary (1131-41) -cr 28.4.1131, *1108/10, +13.2.1141, bur Székesfehérvár; m.28.4.1127 Jelena of Serbia (+after 1146)
    • C1. Géza II King of Hungary (1141-62) -cr 16.2.1141, *Tolna 1130, +31.5.1162, bur Székesfehérvár; m.1146 Eufrosina of Kiev (+ca 1193)
      • ...
      • D2. Béla III King of Hungary (1172-96) -cr 13.1.1173, King of Dalmatia and Croatia, *ca 1148, +23.4.1196 Székesfehérvár; 1m: (div 1169) Maria of Byzantium (*1152 +1182), dau.of Emperor Manuel I Komnenos of Byzantium [actually, the couple was engaged in 1163/4, Bela moved to Byzantium as heir to Manuel, but after Manuel had a son in 1169 the relationship, presumably never consummated, was dissolved; 2m: 1172 Anna (+1184), dau.of Renaud de Chatillon-sur-Loing, Pr of Antioch; 3m: ca 1185 Theodora Komnena; 4m: 1186 Marguerite of France, Cts de Vexin (*1158, +1197), dau.of King Louis VII of France. All Béla's kids were by 2m.
        • ...
        • E3. András II King of Hungary and Croatia (1205-35) -cr 29.5.1205, *1176, +21.9.1235, bur Egres; 1m: before 1203 Gertrude von Andechs (+murdered 8.9.1213); 2m: 1215 Yolande de Courtenay (*1200 +1233); 3m: Székesfehérvár 14.5.1234 Beatrice d'Este (*1215 +1245)
          • ...
          • F8. [3m.] István (Stefan), Duke of Slavonia, Patrician of Venice, *1236, +1271; 1m: 1263 Elizabeth (+1264), dau. of Guglielmo Traversari, Patrician of Ravenna; 2m: Tommasina (+1300), dau.of Micaele Sbarra Morosini, Patrician of Venice
            • G1. [1m.] István, *1264, +young
            • G2. [2m.] András III "the Venetian" King of Hungary (1290-1301) -cr 28.7.1290, *Venice ca 1265, +14.1.1301, bur Buda; 1m: 1290 Fenenna of Kujavia (+ca 1295); 2m: 13.2.1296 Agnes von Habsburg (*18.5.1281, +10.6.1364)