Commentary
Cawley: "The Annalista Saxo names "sororem Ladizlai regis Ungarie Sophiam" as wife of Ulrich, and in a later passage records her second marriage. Zsófia has therefore generally been assumed to be the daughter of Béla I King of Hungary. According to Wegener, she was the daughter of King Béla by Tuta von Formbach, whom he suggests was the king's second wife. His argument is based on connections with the monastery of Suben (near Schärding in Upper Austria), founded in 1040. He explains that Tuta is named in 1153 as "die Gründerin von Suben, Königin", and that in a later document at the monastery she is more specifically referred to as "Königin von Ungarn". The author makes the connection with Zsófia by highlighting the burial at Suben of Udalschalk Graf im Lurngau and his wife Adelheid. He identifies the latter as Zsófia's daughter by her first husband who, he suggests, married Udalschalk after the death of her earlier husband Friedrich I Domvogt von Regensburg. The major difficulty with this hypothesis is Zsófia's own estimated birth date. She must have been born before [1050], at the very latest, given the birth of her three (possibly four) children by her first husband, who died in early 1070. If Zsófia was King Béla's daughter, her mother must have been his Polish wife who, according to Europäische Stammtafeln, died after 1059. An alternative possibility is that she was Tuta's daughter, but by another king of Hungary. Europäische Stammtafeln shows Tuta as the wife of Péter Orseolo King of Hungary. Contemporary political realities suggest that a prominent marriage for a daughter of the disgraced King Péter is unlikely. Until more information comes to light, it is safer to assume that Zsófia was the daughter of King Béla and [Ryksa] of Poland, and that another (so far unidentified) factor explains the apparent connection between Tuta and Zsófia through Suben monastery."
Family
ClaimDetailEvidence
FatherBela I, King of Hungary (1016-1063) [S756] [S900] [S938]
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MotherRixa (~1018-) [S756] [S900] [S938]
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SpouseMagnus, Duke of Saxony (~1045-1106) 
Child +Wulfhilda of Saxony (~1075-1126) [S756] [S900] [S923] [S924]
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Attributes
ClaimDetailEvidence
GenderFemale
NameZsofia of Hungary [S900] [S938]
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NameSophia [S756]
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FatherBela I, King of Hungary (1016-1063) [S756] [S900] [S938]
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MotherRixa (~1018-) [S756] [S900] [S938]
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Timeline
ClaimDateDetailAgeEvidence
Birth 1045 - 1050Hungary [S938]
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DeathJun 18, 1095 [S756] [S938]
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Sources
IndexTitle
[S756] Weis, Frederick Lewis, "Ancestral Roots of Sixty Colonists Who Came To New England before 1700, 7th Ed." (Genealogical Publishing Co., Inc., Baltimore, 1999).
[S900] Cawley, Charles, "Foundation of Medieval Genealogy (Medieval Lands - Saxony: Dukes)" (2006-7 (v1.1 Updated 18 September 2006)) (https://fmg.ac/Projects/MedLands/SAXONY.htm).
[S938] Cawley, Charles, "Foundation of Medieval Genealogy (Medieval Lands - Hungary)" (2006-7 (v1.2 Updated 13 February 2007)) (https://fmg.ac/Projects/MedLands/HUNGARY.htm).