GÉZA, son of BÉLA I King of Hungary & his wife [Ryksa] of Poland ([in Poland] [1044/45]-25 Apr 1077, bur Vac). The Gesta Hungarorum names "Geichæ et Ladislai" as sons of "fratris sui Belæ" when recording that King András obtained their agreement to the future succession of his son Salomon[532]. The Kronika Wegiersko-Polska names "Geyzam et Ladislaum" as the two older sons of "Bela" and his wife "rex Polonie filiam", adding that they were both born in Poland[533]. He was sent as a hostage to the imperial court in [1062/63][534], at which time he must have been unmarried in line with the custom of not sending married men as hostages to foreign courts. He sought refuge in Poland after his father's death in 1063, but later returned to Hungary, made peace with King Salamon, and was appointed Duke between March and Gran[535]. This must have occurred in [1064/67] if it is correct that Géza's second marriage took place before 1067, as suggested below. The Chronicon Posoniense records disputes in 1071 between "Salomon rex" and "duce magno Geyza Ungarorum"[536]. Relations deteriorated and Géza, possibly with at least financial support from Emperor Mikhael VII[537], defeated King Salamon at Mogyorod, forcing the king to withdraw to the western border and from there to Germany. Géza succeeded his cousin in 1074 as GÉZA I King of Hungary. The Chronicon Posoniense records that "Salomon" was deposed in 1074 and "Magnus rex" crowned in 1075[538]. "Magnus qui et Geysa supremus Hungarorium Dux postea…rex consecratus, Belæ regis filius" founded the monastery of St Benedict, Gron, in the presence of "Ladislao Duce germano meo…Iula Comite Palatino", by charter dated 1075[539]. The Gesta Hungarorum records that Géza succeeded King Salomon but died after a reign of three years and was buried at "Waciæ [Vác]"[540]. The Chronicon Varadiense records the death "VIII Kal Mai" in 1077 of "Geysa primogenitus Belæ regis" and his burial "in ecclesia Vaciensi quam ipse construxit"[541].
m firstly ([1062]) [SOPHIE de Looz, daughter of EMMO Comte de Looz & his wife ---] (before [1044/46]-[1065]). She is named as the first wife of King Géza in Europäische Stammtafeln[542]. The primary source on which this is based has not yet been identified. Kerbl, in his analysis concerning Géza I's [second] Byzantine marriage, does not mention this supposed first marriage[543]. If it is correct, the marriage presumably took place while Géza was a hostage at the imperial court, which Kerbl dates to [1062/63][544]. This is consistent with Sophie having been born in [1044/46]. The Vita Arnulfi names "Arnulfum comitem de Lo et Sophiam ducissam de Hungaria…et ducissam de Hui" as the children of Emmo Comte de Looz, adding that Sophie was the mother of "regem de Hungaria"[545]. This manuscript, written at Oudenbourg abbey, is dated to 1220[546]. This is late to be reliable. In addition, the document represents the ancestors of Comte Emmo in a way which is inconsistent with earlier primary sources. As the county of Looz was among the temporal possessions of the Bishop of Liège and, as such, part of the duchy of Lower Lotharingia under the suzerainty of the German emperor, it would not be improbable for a daughter of the comte de Looz to have been staying at the imperial court and for her marriage to have been arranged with another noble visitor. The Vita Andreæ, first abbot of Averboden, in the Chronicle written by Nicolas Hogeland Abbot of Middelburg, records that "Sophia de Los, Hungariæ regina, comitis Arnoldi Lossensis soror" sent letters to her brother after hearing that he intended to found Averboden abbey[547]. This report is clearly anachronistic as the abbey in question was founded in 1135, when Sophie de Looz could not possibly have been queen of Hungary. The question remains whether Sophie´s supposed marriage to King Géza I is based on speculation, suggested by an as yet unidentified secondary source which was trying to make sense of the passages in the Vita Arnulfi and the Vita Andreæ by identifying the most likely Hungarian king who could have been her husband. Until further sources come to light, it has been decided to show Sophie de Looz in square brackets. Whatever the truth of the matter, the chronology of the births of King Géza´s older children suggests that their mother could not have been the Byzantine wife whom he married in [1066/75].
m secondly ([1066/75]) --- Synadene, daughter of THEODULOS Synadenos & his wife --- Botaneiatissa. Skylitzes records that Emperor Nikephoros Botaneiates married "sororis suæ filiam Synadenen, Theodulo Synadeno genitam" ("t?? ae???? a?t?? ? ßas??e??") the daughter of Theodoulos Synadenos ("t?? S??ad????, ???at??a ??sa? Te?d????? t?? S??ad????") to "crali Ungariæ" ("t? ????? ??????a? e?? ???a??a") and that she returned to Byzantium after her husband died[548]. The passage does not name the Hungarian king in question. Kerbl says that Horvát suggested that her husband was Lambert, son of Béla I King of Hungary[549], although it is unclear how Lambert could have been described as "krali" of Hungary as no other record has been identified indicating that he ever reigned as king. Kerbl also cites Wertner as the first source which proposed that her husband was Géza of Hungary[550]. The narrative of Skylitzes Continuatus ends during the reign of Emperor Nikephoros (who reigned from 1078 until his forced abdication in 1081). This suggests that the husband of --- Synadene must have died before that date, which supports his identification as King Géza. However, it is not impossible that the text was written some years later, and that her return to Constantinople was mentioned because it was of recent date at the time of writing. Nevertheless, it is unlikely that her husband was King László I (who appears to be the only other realistic candidate) as his marriage to Adelheid von Rheinfelden appears to be certain as discussed above. The remaining potential difficulty is with the date of the marriage. Wertner suggested that the marriage took place in [Oct 1073/Oct 1074][551]. Nikephoros Botaneiates (later Emperor Nikephoros III) was Byzantine military commander along the Danube, adjacent to Hungarian territory, from 1064 to before 1067 when he was reassigned as governor of Antioch[552]. Kerbl therefore assesses this as the more likely period during which the marriage took place[553]. However, if it is correct, as stated by Skylitzes, that --- Synadene returned to Byzantium after her husband's death, it is probable that she had no surviving children. If she had had children, it is reasonable to expect that she would have remained with them to protect their interests, especially as the chronology suggests that King Géza's son Kálmán could not in any case have been her son and would therefore have had a superior claim to the throne than any half-brothers. If this is correct, all of King Géza's children must have been born from his first marriage, which would date his second marriage to --- Synadene to the early 1070s at the earliest.
http://fmg.ac/Projects/MedLands/HUNGARY.htm#_Toc146273218