Notices from the 11th and 12th century narrative sources regarding Ulrich I of House Weimar–Orlamünde, the margrave of Carniola and Istria.
Wodalricus II, de Wimmare et Orlagemunde, comes († 1112)
- filius Wodalrici I, marchionis Carniole, marchionis Istrie
- filius Sophie, filie Bele I regis Hungarie
- frater Popponis III, contramarchionis Istrie
- maritus Adelheide
Ulrich II donates Sočerga to the Church of Aquileia.
Ulrich II Weimar-Orlamünde and his wife Adelaide donate their possessions in the County of Istria to Patriarch Ulrich of Eppenstein and the Church of Aquileia.
Ulrich II donates Oprtalj to the Church of Aquileia.
Ulrich II of Weimar and Orlamünde dies heirless after having repudiated his wife Adelaide; his patrimony in Thuringia is claimed by Siegfried of Ballenstedt, the son of another Adelaide, the daughter of Otto I of Orlamünde, but Emperor Henry V refuses to acknowledge this hereditary right and confiscates the family patrimony as imperial possessions; a feud breaks out – the original House Weimar-Orlamünde, which included Ulrich I, the margrave of Carniola, Istria and Savinja, dies out in male line (a contemporary narrative account penned by Ekkehard of Aura).