Question: What is the cause of death of Prince Waldemar Of Prussia (1868–1879)'s mother?
Sentence (from "Prince Waldemar of Prussia (1868–1879)"): Prince Joachim Friedrich Ernst Waldemar of Prussia (10 February 1868 – 27 March 1879) was the sixth child and youngest son of Crown Prince Friedrich (later Emperor Friedrich III), and Victoria, Princess Royal, the eldest daughter of the Queen Victoria.
Relevant evidence: Yes