MAGNUS ([1045]-Erthensburg 23 Aug 1106, bur Lüneburg St Michaelis). He is named, and his parentage given, in the Annalista Saxo[339]. Morkinskinna names "Magnus" as son of "King Magnus…sister…Úlfhildr…daughter of King Óláfr" and "a powerful duke named Otto south in Saxony"[340]. He participated in the rebellion of Otto von Northeim Duke of Bavaria and was imprisoned by Heinrich IV King of Germany in 1070. He succeeded his father in 1072 as MAGNUS Herzog von Sachsen although still in captivity[341]. The Annales Rosenveldenses records the death "1106 VIII Kal Sep in Ertheneburg" of "Magnus dux" and his burial "Luneburg in monasterio"[342]. The necrology of Lüneburg records the death "23 Aug" of "Magnus dux"[343]. m (after 6 Mar 1070[344]) as her second husband, SOPHIA of Hungary, widow of ULRICH I Marchese di Carniola e Istria, daughter of BÉLA I King of Hungary & his wife [Ryksa] of Poland ([1045/50]-18 Jun 1095, bur Lüneburg St Michael). The Annalista Saxo names "sororem Ladizlai regis Ungarie Sophiam" as wife of Ulrich, and in a later passage records her second marriage[345]. The marriage presumably took place soon after the death of her first husband in Mar 1070 as Duke Magnus was imprisoned later in 1070. Her second marriage is confirmed by the Chronicon Sancti Michaelis Luneburgensis which names "Sophia filia regis Ungarorum Wadreslai" as wife of "Magnus dux"[346], 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…14 Kal Iunii"[347]. Duke Magnus & his wife had two children