Question: What is the date of death of Maria Piłsudska's husband?
Sentence (from "Maria Piłsudska"): Maria Piłsudska, née Koplewska (1865 – 17 August 1921), was the first wife of Poland's Marshal Józef Piłsudski and ostensibly the first lady of Poland during most of his service as Poland's Chief of State.
Relevant evidence: Yes