Question: Why did Maria Isabel De Alcântara, Countess Of Iguaçu's father die?
Sentence (from "Maria Isabel de Alcântara, Countess of Iguaçu"): Maria Isabel de Alcântara Bourbon (São Paulo, 28 February 1830 – 5 September 1896) was the third daughter (fifth child) of Emperor Pedro I of Brazil and his mistress, Domitila de Castro, Marchioness of Santos.
Relevant evidence: Yes