Question: What is the date of death of Philip Prospero, Prince Of Asturias's mother?
Sentence (from "Philip Prospero, Prince of Asturias"): (Felipe Próspero José Francisco Domingo Ignacio Antonio Buenaventura Diego Miguel Luis Alfonso Isidro Ramón Víctor; 28 November 1657 1 November 1661) was the first son of Philip IV of Spain and Mariana of Austria to survive infancy.
Relevant evidence: Yes