Urraca Afonso
Urraca Afonso( c.1260-1290?) was a Portuguese noble lady, illegitimate daughter of Afonso III of Portugal and Madragana Ben Aloandro.
And half sister of Denis of Portugal.
Urraca was twice married, first to, and then with João Mendes de Briteiros.
Afonso II of Portugal
Afonso II (English: "Alphonzo"), or "Affonso" (Archaic Portuguese), "Alfonso" or "Alphonso" (Portuguese-Galician) or "Alphonsus" (Latin version), nicknamed the Fat (Portuguese "o Gordo"), King of Portugal, was born in Coimbra on 23 April 1185 and died on 25 March 1223 in the same city.
He was the second but eldest surviving son of Sancho I of Portugal by his wife, Dulce, "Infanta" of Aragon.
Afonso succeeded his father on 27 March 1211.
João Afonso Telo de Meneses, 2nd Lord of Albuquerque
João Afonso Telo de Meneses (1200s-1268) was a Portuguese nobleman, 2nd Lord of Albuquerque,
and "alferes-mor" of Afonso III of Portugal.
Afonso III of Portugal
Afonso III (rare English alternatives: "Alphonzo" or "Alphonse"), or "Affonso" (Archaic Portuguese), "Alfonso" or "Alphonso" (Portuguese-Galician) or "Alphonsus" (Latin), the Boulonnais (Port. "
o Bolonhês"), King of Portugal (5 May 121016 February 1279) was the first to use the title "King of Portugal and the Algarve", from 1249.
He was the second son of King Afonso II of Portugal and his wife, Urraca of Castile; he succeeded his brother, King Sancho II of Portugal, who died on 4 January 1248.
Sancho II of Portugal
Sancho II, nicknamed the Pious and the Caped or the Capuched( Portuguese:" o Capelo"), King of Portugal( 8 September 1209 – 4 January 1248) was King of Portugal from 1223 to 1248.
He was succeeded on the Portuguese throne by his brother, King Afonso III, in 1248.
Sancho was born in Coimbra, the eldest son of Afonso II of Portugal by his wife, Infanta Urraca of Castile.
Afonso Pires Gato
Afonso Pires Gato( 1210 -?) was a Portuguese medieval knight, who served in the court of Afonso III of Portugal.
He was the son of Pedro Nunes Velho and Maria de Baião, a remote descendant of Mendo Alão.
His wife was Urraca Fernandes de Lumiares, descendant of Sancho Nunes de Barbosa and Sancha Henriques.
Mem Soares de Melo, 1st Lord de Melo
Mem Soares de Melo, 1st Lord de( c.1200-1262) was a Portuguese Nobleman who served in the court of Afonso III of Portugal.
Mem Rodrigues de Briteiros
Mem Rodrigues de Briteiros( c.1225 -c.1270) was a Portuguese nobleman, member of the Court of Afonso III of Portugal.
His parents were Rui Gomes de Briteiros( vassal of Afonso III) and Elvira Anes da Maia, a noble woman, descendant of.
His wife was Maria Anes da Veiga, daughter of João Pires da Veiga and Teresa Martins, and descendant of.
Beatrice of Castile (1242–1303)
Beatrice of Castile( 1242/1244 – 27 October 1303), an illegitimate daughter of Alfonso X of Castile and his mistress Mayor Guillén de Guzmán, was the second Queen consort of Afonso III of Portugal.
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.

Question: Who is Afonso Iii Of Portugal's paternal grandfather?
Answer: Sancho I of Portugal