Oda von Werl (1050-1110) (1050–1110) Parents Richenza of Swabia Herman III van Werl Children Henry I, Margrave of the Nordmark Rudolf I, Count of Stade Udo II, Margrave of the Nordmark Adelheid von Stade Siblings Henry, Margrave of Frisia Mathilde von Northeim Ida von Nordheim Ethelinde of Northeim Kuno, Count of Beichlingen Siegfried III, Count of Boyneburg Partners Lothar Udo II, Margrave of the Nordmark