Question: What is the date of death of Duarte Of Portugal, 4Th Duke Of Guimarães's mother?

Knowledge 1: Duarte of Portugal, 4th Duke of Guimarães
Duarte of Portugal, 4th Duke of Guimarães (October 7, 1515 in Lisbon – September 20, 1540 in Lisbon) was a Portuguese "infante" (prince); the sixth son of King Manuel I of Portugal and his wife Maria of Aragon. [SEP] Knowledge 2: Maria of Aragon, Queen of Portugal
Maria of Aragon (29 June 1482 – 7 March 1517) was a Spanish infanta, and queen consort of Portugal as the second spouse of Portuguese King Manuel I.
Knowledge 1: Duarte of Portugal, 4th Duke of Guimarães
Duarte of Portugal, 4th Duke of Guimarães (October 7, 1515 in Lisbon – September 20, 1540 in Lisbon) was a Portuguese "infante" (prince); the sixth son of King Manuel I of Portugal and his wife Maria of Aragon. [SEP] Knowledge 2: Catarina, Duchess of Braganza
Infanta Catherine of Guimarães, Duchess of Braganza by marriage( 18 January1540 – 15 November 1614) was a Portuguese" infanta"( princess) claimant to the throne following the death of King Henry of Portugal in 1580.She was the second daughter of Infante Edward, 4th Duke of Guimarães( sixth son of Manuel I of Portugal) and Isabella of Braganza, she was married to John, 6th Duke of Braganza, a descendant of earlier Portuguese monarchs, and head of the most important aristocratic House in Portugal.The duchess had several children, of whom Teodósio of Braganza, was her eldest surviving son.When King Henry died( 1580), Edward's issue were the only surviving legitimate heirs of any of the sons of King Manuel I of Portugal.As the male line is preferred in Portuguese succession before the female one, descendants of Manuel I's daughters( such as king Philip II of Spain) had, in principle, only a weaker claim to the throne than Edward's descendants, to whom Catherine belonged.Following this principle, the first in line to the throne would have been Catherine's nephew Ranuccio I Farnese of Parma, as that 11- year- old Italian boy was the heir of her elder sister Maria of Guimarães.Catherine was an ambitious, cunning and power- hungry woman who participated in court intrigues, hoping to become the ruler of Portugal and reinforce the position of the House of Braganza as the most powerful noble family in the Iberian Peninsula.Her cousin, King Philip II of Spain, used his descent as son of Infanta Isabella, eldest daughter of king Manuel I.Her other cousin Anthony, Prior of Crato was a male, though illegitimate.Anthony had already in 1578 claimed the throne.Catherine had married the Duke of Braganza, John, who himself as a grandson of the late James, Duke of Braganza, was a legitimate heir of Portugal.The Duchess' son, Teodósio of Braganza, would have been their royal heir and successor to the throne.The duchess's claim was relatively strong, as it was reinforced by her husband's position as one of the legitimate heirs; thus they would both be entitled to hold the kingship.Her claim was also strengthened by the fact that she was living in Portugal, and was a mature woman of forty.However, Portugal had not yet had a generally recognized queen regnant, but only males on the throne.Moreover, she was a younger daughter, thus there was a genealogically senior claimant, her nephew Ranuccio.Philip II of Spain tried to bribe Catherine's husband, the Duke of Braganza, to abandon his wife's pretensions, offering him the Vice- Kingdom of Brazil, the post of Grand- Master of the Order of Christ, a license to send a personal ship to India every year, and the marriage of one of his daughters to Diego, Prince of Asturias, Philip's heir at that time.The Duke of Braganza, influenced by Catherine, refused the proposal.She failed in the struggle: the strongest claimant was her cousin Philip II of Spain who wanted to unite Portugal in a personal union with the other Spanish kingdoms under himself.The nationalist party, those who desired Portugal to remain independent, supported her illegitimate cousin Anthony of Crato, not Catherine.Anthony lost the final competition to Philip in the Battle of Alcântara in 1580.In a couple of years, she lost her husband John of Braganza( 1543 – 1583).She lived on as a widowed lady under the rule of her Castilian cousin and worked hard to pave the way for her descendants to take the Portuguese throne, which finally happened in 1640.In 1640, Catherine's grandson and direct heir, the then Duke of Braganza, became King John IV of Portugal.The Duchess was then retrospectively acknowledged as the legitimate heir, as result of her descendants obtaining the throne, although in her own lifetime she was only one of several possible heirs.By the unanimous voice of the people John was raised to the throne of Portugal during the revolution effected on December 1, 1640 against the Spanish king, Philip IV.
Knowledge 1: Duarte of Portugal, 4th Duke of Guimarães
Duarte of Portugal, 4th Duke of Guimarães (October 7, 1515 in Lisbon – September 20, 1540 in Lisbon) was a Portuguese "infante" (prince); the sixth son of King Manuel I of Portugal and his wife Maria of Aragon. [SEP] Knowledge 2: Ranuccio I Farnese, Duke of Parma
Ranuccio I Farnese( 28 March 1569 – 5 March 1622) reigned as Duke of Parma, Piacenza and Castro from 1592.A firm believer in absolute monarchy, Ranuccio, in 1594, centralised the administration of Parma and Piacenza, thus rescinding the nobles' hitherto vast prerogative.He is best remembered for the" Great Justice" of 1612, which saw the executions of a large number of Piacentine nobles suspected of plotting against him.Claudia Colla his mistress and her mother were accused of using witchcraft to stop him from having offsprings, and both were sentenced to death by burning.Because one of the conspirators, Gianfrancesco Sanvitale, falsely implicated several Italian princes, namely Vincenzo Gonzaga, Duke of Mantua and Cesare d' Este, Duke of Modena, in the plot, Vincenzo and Cesare's names appeared on the list of conspirators during formal court proceedings; as a result, Ranuccio's reputation among the rulers of Italy was irreparably damaged because it was evident that he gave credence to Gianfrancesco's obviously false confession.When, consequently, in the early 1620s, Ranuccio was looking for a bride for his younger legitimate son and heir, Odoardo, none of the Italian ruling families were forthcoming with princesses.He did, however, manage to engineer a match with Margherita de' Medici, daughter of Cosimo II of Tuscany.The husband of Margherita Aldobrandini, niece of Pope Clement VIII, Ranuccio, the son of a Portuguese infanta, was considered as a potential king of Portugal when his childless great- uncle King Henry I died.The throne, however, passed to Philip II of Spain, whose troops had promptly occupied the country after Henry I's death.His great- uncle HenryI of Portugal's death triggered the struggle for the throne of Portugal when Ranuccio was 11 years old.As the son of the late elder daughter of Infante Edward, 4th Duke of Guimarães, the only son of King Manuel I whose legitimate descendants survived at that time, Ranuccio was according to the feudal custom the first heir to the throne of Portugal.However his father was an ally and even a subject of the Spanish king, another contender, so Ranuccio's rights were not very forcibly claimed.Instead, Ranuccio's mother's younger sister Catherine, Duchess of Braganza, claimed the throne, very ambitiously, but failed.Under RanuccioI's rule, the dukedom annexed the territories of Colorno, Sala Baganza, and Montechiarugolo.He guided a cultural renewal in the city of Parma, supporting the arts and constructing the 4,500 seat Farnese Theater.Numerous improvements and monuments in Parma were constructed under Ranuccio I at his behest, including a revitalization of the University of Parma and the final expansion of the city walls.Construction of the Palazzo della Pilotta, the court palace of the Farnese family, was completed in 1620.Ranuccio was succeeded by his son Odoardo, initially under the regency of Ranuccio's brother, Odoardo Farnese.

Answer: 7 March 1517