Question: Who is the uncle of Helperich Von Plötzkau, Margrave Of The Nordmark?
Sentence (from "Helperich von Plötzkau, Margrave of the Nordmark"): Helperich (Helferich) (d. 1118), Count of Plötzkau and Walbeck, and Margrave of the Nordmark, son of Dietrich, Count of Plötzkau, and Mathilde von Walbeck, daughter of Conrad, Count of Walbeck, and Adelheid of Bavaria.
Relevant evidence: Yes