Question: What is the date of death of Barbara Of Portugal's husband?
Sentence (from "Ferdinand VI of Spain"): Ferdinand VI of Spain (23 September 1713 – 10 August 1759), called the Learned ("el Prudente") and the Just ("el Justo"), King of Spain from 9 July 1746 until his death in 1759, was the third ruler of the Spanish Bourbon dynasty.
Relevant evidence: Yes