Question: When did Anna Of Masovia, Duchess Of Racibórz's father die?
Sentence (from "Sophia of Masovia"): Sophia of Masovia( 1497/1498- before 11 March 1543) was a Princess of Masovia, daughter of Konrad III Rudy, Duke of Masovia and his wife Anna Radziwiłł.
Relevant evidence: No