Fernando II, Duke of Braganza
Dom Fernando II of Braganza( 1430 – 20 June 1483) was the 3rd Duke of Braganza and the 1st Duke of Guimarães, among other titles.
He is known for being executed for treason against the King.
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.
Catarina, Duchess of Braganza
Infanta Catherine of Guimarães, Duchess of Braganza by marriage( 18 January
1540 – 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.
Infante Duarte, 5th Duke of Guimarães
Infante Duarte of Portugal, 5th Duke of Guimarães( March 1541, in Almeirim – 28 November 1576, in Évora) was a Portuguese" infante"( prince), son of Duarte of Portugal, 4th Duke of Guimarães and his wife, Isabel of Braganza.
He served as Constable of the Kingdom, the highest military authority in the Portuguese Empire, second only to the monarch.
Frederick Gordon-Lennox, 9th Duke of Richmond
Frederick Charles Gordon Lennox, 9th Duke of Richmond, 9th Duke of Lennox, 9th Duke of Aubigny, 4th Duke of Gordon( 5 February 1904 – 2 November 1989) was a British peer, engineer, racing driver, and motor racing promoter.
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.
Jaime, Duke of Braganza
Jaime of Braganza( 1479 – 20 September 1532) was the 4th Duke of Braganza and the 2nd Duke of Guimarães, among other titles.
He is known for reviving the wealth and power of the House of Braganza which had been confiscated by King John II of Portugal.
Charles Lennox, 4th Duke of Richmond
Charles Lennox, 4th Duke of Richmond, 4th Duke of Lennox, 4th Duke of Aubigny,( 9 December 176428 August 1819) was a Scottish peer, soldier, politician, and Governor General of British North America.
Mauricio Álvarez de las Asturias Bohorques, 4th Duke of Gor
Mauricio Álvarez de las Asturias Bohorques y Ponce de León, 4th Duke of Gor( 4 November 1864 – 24 February 1930) was a Spanish Duke and fencer.
He competed in the individual sabre, foil and Épée events at the 1900 Summer Olympics.
He was the 4th Duke of Gor, a peerage Grandee title in Spain.
Infanta Maria of Guimarães
Infanta Maria of Guimarães( 12 August 1538 – 9 July 1577) was a Portuguese infanta, daughter of Infante Duarte, Duke of Guimarães( son of King Manuel I of Portugal), and Isabel of Braganza.
She married Alessandro Farnese, Duke of Parma and Piacenza on 11 November 1565.
She was Hereditary Princess of Parma by marriage.

Question: Which country Duarte Of Portugal, 4Th Duke Of Guimarães's mother is from?
Answer: Spanish