Question: Who is the uncle of Helperich Von Plötzkau, Margrave Of The Nordmark?
Sentence (from "Lothair Udo III, Margrave of the Nordmark"): Lothair Udo III( 1070- 1106), Margrave of the Nordmark and Count of Stade( as Lothair Udo IV), son of Lothair Udo II, Margrave of the Nordmark, and Oda of Werl, daughter of Herman III, Count of Werl, and Richenza of Swabia.
Relevant evidence: No