Question: What is the cause of death of Marta Esther Rocafort-Altuzarra's husband?
Sentence (from "Marta Esther Rocafort-Altuzarra"): Marta Esther Rocafort y Altuzarra, later hyphenated Rocafort-Altuzarra (18 September 1913 in Havana – 4 February 1993 in Miami, Miami-Dade County, Florida) was the second wife of the Count of Covadonga (previously known as Alfonso, Prince of Asturias).
Relevant evidence: Yes