Isabel of Coimbra
Infanta Isabel of Coimbra( Isabella of Portugal)
( 1 March 1432 – 2 December 1455) was a Portuguese infanta and a queen consort of Portugal as the first spouse of King Afonso V of Portugal.
Princess Isabel Maria of Braganza
Isabel Maria of Bragança, Infanta of Portugal( Isabel Maria Alberta Josefa Micaela Gabriela Rafaela Francisca de Paula e de Assis Teresa Adelaide Eulália Sofia Carolina; 19 November 1894, Kleinheubach, Kingdom of Bavaria – 12 January 1970, Regensburg, Bavaria, Germany) was a member of the House of Braganza and Infanta of Portugal by birth.
Through her marriage to Franz Joseph, 9th Prince of Thurn and Taxis, Isabel Maria was also a member of the House of Thurn and Taxis and Princess consort of Thurn and Taxis.
Maria of Portugal, Duchess of Viseu
Maria of Portugal, Duchess of Viseu (18 June 1521 – 10 October 1577 in Lisbon) was an Infanta of Portugal, the only daughter of King Manuel I of Portugal and Eleanor of Austria.
A noted patron of the arts, Maria's personal wealth rivaled that of the king, her brother (John III of Portugal), making her the richest woman in Portugal and one of the richest in Europe.
Ferdinand of Portugal, Duke of Guarda
Ferdinand of Portugal, Duke of Guarda,( 5 June 1507 – 7 November 1534) was a Portuguese" infante"( prince), the son of King Manuel I of Portugal and his second wife, Maria of Aragon.
Kaya Alp
Kaya Alp was, according to Ottoman tradition, the son of Kızıl Buğa and the father of Suleyman Shah, who was, in turn, the grandfather of Ertuğrul, and the great grandfather of the Ottoman Empire founder, Osman I.
Infanta Isabel Maria of Braganza
Infanta Isabel Maria of Braganza ;
Queluz, 4 July 1801 – Benfica, then Belém, 22 April 1876 was a Portuguese "infanta" (princess) daughter of King John VI of Portugal and his wife Carlota Joaquina of Spain.
She acted as regent for two years.
Isabel de Castro
Isabel Maria Bastos Osório de Castro e Oliveira (August 1, 1931 – November 23, 2005) was a Portuguese film actress.
John VI of Portugal
John VI (Portuguese: "João VI"; 13 May 1767 – 10 March 1826), nicknamed "the Clement", was King of the United Kingdom of Portugal, Brazil and the Algarves from 1816 to 1825.
Although the United Kingdom over which he ruled ceased to exist "de facto" beginning in 1822, he remained its monarch "de jure" between 1822 and 1825.
After the recognition of the independence of Brazil under the Treaty of Rio de Janeiro of 1825, he continued as King of Portugal until his death in 1826.
Under the same treaty, he also became titular Emperor of Brazil for life, while his son, Pedro I of Brazil, was both "de facto" and "de jure" the monarch of the newly-independent country.
Born in Lisbon in 1767, the son of Maria I and Peter III of Portugal, he was originally an "infante" (prince, but not heir to the throne) of Portugal.
He only became heir to the throne when his older brother José, Prince of Brazil, died of smallpox in 1788 at the age of 27.
Before his accession to the Portuguese throne, John VI bore the titles Duke of Braganza and Duke of Beja, as well as Prince of Brazil.
From 1799, he served as prince regent of Portugal (and later, from 1815, as prince regent of the United Kingdom of Portugal, Brazil and the Algarves), due to the mental illness of his mother, Queen Maria I.
In 1816, he succeeded his mother as monarch of the Portuguese Empire, with no real change in his authority, since he already possessed absolute powers as regent.
One of the last representatives of absolute monarchy in Europe, he lived during a turbulent period; his reign never saw a lasting peace.
Throughout his period of rule, major powers, such as Spain, France and Great Britain, continually intervened in Portuguese affairs.
Forced to flee to South America across the Atlantic Ocean into Brazil when troops of the Emperor Napoleon I invaded Portugal, he found himself faced there with liberal revolts; he was compelled to return to Europe amid new conflicts.
His marriage was no less conflictual, as his wife, Carlota Joaquina of Spain, repeatedly conspired against her husband in favor of personal interests or those of her native Spain.
He lost Brazil when his son Pedro declared independence, and his other son Miguel (later Miguel
I of Portugal) led a rebellion that sought to depose him.
According to recent scholarly research, his death may well have been caused by arsenic poisoning.
Notwithstanding these tribulations he left a lasting mark, especially in Brazil, where he helped to create numerous institutions and services that laid a foundation for national autonomy, and he is considered by many historians to be a true mastermind of the modern Brazilian state.
Still, he has been widely (if unjustly) viewed as a cartoonish figure in Portuguese-Brazilian history, accused of laziness, lack of political acumen and constant indecision, and is often portrayed as physically grotesque.
Afonso, Prince of Portugal (1526)
Afonso, Prince of Portugal was the first son of king John III of Portugal and his queen, Catherine of Austria.
He was the Prince of Portugal but died in the same year he was born, in 1526.
Isabel Luísa, Princess of Beira
Infanta Isabel Luísa of Portugal (6 January 1669 – 21 October 1690) was a Portuguese "infanta" and the sole daughter of Peter II of Portugal and his first wife and former sister-in-law Maria Francisca of Savoy.
She was the heir presumptive to the throne of Portugal between 1668 and 1689, when her half-brother John was born.
As such, she was styled Princess of Beira.

Question: Who is the paternal grandfather of Infanta Isabel Maria Of Braganza?
Answer: Peter III of Portugal