Ulrich I was the only son of Poppo I von Weimar, Markgraf von Krain und Istrien (Carniola and Istria in English), and his wife Hadamut von Istrien, heir of Krain and Istrien.
His father died before 1044, and Ulrich is mentioned as Markgraf von Krain in 1045, and Markgraf von Istrien in 1060. He died 6 March 1070.
He married about 1062/63, Sophia of Hungary, daughter of Bela I, King of Hungary
They had issue;
After his death, his widow, married Magnus Billung, Duke of Saxony, and had further issue.
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Ulrich I is 29 degrees from Alfred Nobel, 41 degrees from Henri Becquerel, 27 degrees from Niels Bohr, 27 degrees from Marie Curie, 38 degrees from Alec Fleming, 28 degrees from Howard Florey, 35 degrees from Albert Imre Szent-Györgyi, 30 degrees from Barbara McClintock, 38 degrees from Wilhelm Roentgen and 31 degrees from Chandra Garrow on our single family tree. Login to find your connection.