Question: What nationality is Frederick Of Altmark's father?
Sentence (from "Frederick I, Elector of Brandenburg"): Frederick (Middle High German: "Friderich," Standard German: "Friedrich"; 21 September 1371 – 20 September 1440) was the last Burgrave of Nuremberg from 1397 to 1427 (as Frederick VI), Margrave of Brandenburg-Ansbach from 1398, Margrave of Brandenburg-Kulmbach from 1420, and Elector of Brandenburg (as Frederick I) from 1415 until his death.
Relevant evidence: Yes