SOPHIA ([1045/50]-18 Jun 1095, bur Lüneburg St Michaelis). The Annalista Saxo names "sororem Ladizlai regis Ungarie Sophiam" as wife of Ulrich, and in a later passage records her second marriage[448]. Sophia has therefore generally been assumed to be the daughter of Béla I King of Hungary[449]. According to Wegener[450], 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 Sophia by highlighting the burial at Suben of Udalschalk Graf im Lurngau and his wife Adelheid. He identifies the latter as Sophia'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 Sophia's own estimated birth date. She must have been 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 Sophia was King Béla's daughter, her mother must have been his Polish wife who, according to Europäische Stammtafeln[451], died after 1059. An alternative possibility is that she was Tuta's daughter, but by another king of Hungary. Europäische Stammtafeln[452] 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 Sophia was the daughter of King Béla and [Ryksa] of Poland, and that another (so far unidentified) factor explains the apparent connection between Tuta and Sophia through Suben monastery. Sophia's second marriage is confirmed by the Chronicon Sancti Michaelis Luneburgensis which names "Sophia filia regis Ungarorum Wadreslai" as wife of "Magnus dux"[453], although King László was her brother not her father. Sophia's second marriage presumably took place soon after the death of her first husband in Mar 1070 as Duke Magnus was imprisoned later in 1070. The Annalista Saxo records the death of "Sophia quoque ductrix…XIV Kal Iunii"[454]. m firstly ([1062/63]) ULRICH I Marchese of Carniola and Istria, son of POPPO I [von Weimar] Marchese of Carniola and Istria & his wife Hadamut of Istria (-6 Mar 1070). m secondly (after 6 Mar 1070) MAGNUS of Saxony, son of ORDULF Duke in Saxony [Billung] & his first wife Wulfhild of Norway (-Erthensburg 25 Aug 1106, bur Lüneburg St Michaelis). He succeeded his father in 1072 as MAGNUS Duke in Saxony.