Question: When did Maria Of Austria, Holy Roman Empress's husband die?
Sentence (from "Beatrice of Swabia"): Beatrice or Beatrix of Swabia( April/ June 1198 – 11 August 1212), a member of the Hohenstaufen dynasty, was Holy Roman Empress and German Queen in 1212 as the first wife of the Welf emperor Otto IV.
Relevant evidence: No