Hannah Arnold
Hannah Arnold, also known as Hannah Waterman King, was the grandmother of Benedict Arnolds children.
Anne Denman
Anne Denman( 1587–1661) was born in Olde Hall, Retford, Nottinghamshire.
Through a fortunate second marriage with Thomas Aylesbury, she became the grandmother of Lady Anne Hyde, Duchess of York and great- grandmother of Queen Mary II and Queen Anne.
Pedro Afonso, Count of Barcelos
Pedro Afonso, Count of Barcelos (before 1289 - May 1350), was an illegitimate son of King Denis of Portugal and Grácia Frois.
He was made the 3rd Count of Barcelos on 1 May 1314.
Diana Guardato
Diana Guardato was a member of the aristocratic Patrician Guardato family, and had three children with King Ferdinand I: Diana Guardato is the 16th- Great Grandmother of His Royal Highness Albert II of Belgium, 15th- Great Grandmother of His Majesty Juan Carlos
I of Spain, 17th- Great Grandmother of Philippe of Belgium, 14th- Great Grandmother of His Majesty Manuel II of Portugal, 16th- Great Grandmother of Grand Duke Henri, as well as many others.
Mona Hopton Bell
Mona Hopton Bell( 1867- 1940) was a British artist, best known for her portraits of civic figures.
She was the grandmother of the painter Jean H. Bell.
Pedro Afonso, Prince Imperial of Brazil
Dom Pedro Afonso (19 July 1848 – 10 January 1850) was the Prince Imperial and heir apparent to the throne of the Empire of Brazil.
Born at the Palace of São Cristóvão in Rio de Janeiro, he was the second son and youngest child of Emperor Dom Pedro II and Dona Teresa Cristina of the Two Sicilies, and thus a member of the Brazilian branch of the House of Braganza.
Pedro Afonso was seen as vital to the future viability of the monarchy, which had been put in jeopardy by the death of his older brother Dom Afonso almost three years earlier.
Pedro Afonso's death from fever at the age of one devastated the Emperor, and the imperial couple had no further children.
Pedro Afonso's older sister Dona Isabel became heiress, but Pedro II was unconvinced that a woman could ever be accepted as monarch by the ruling elite.
He excluded Isabel from matters of state and failed to provide training for her possible role as empress.
With no surviving male children, the Emperor started to believe that the imperial line was destined to end with his own death.
Kaoru Hatoyama
After the elections of 2009, she became more widely known as the grandmother of Prime Minister Yukio Hatoyama and his politician brother Kunio Hatoyama.
Denis of Portugal
Denis (9 October 1261 – 7 January 1325 in Santarém), called the Farmer King ("Rei Lavrador") and the Poet King ("Rei Poeta"), was King of Portugal.
The eldest son of Afonso III of Portugal by his second wife, Beatrice of Castile, and grandson of king Alfonso X of Castile (known as the Wise), Denis succeeded his father in 1279.
His marriage to Elizabeth of Aragon, who was later canonised as a saint of the Roman Catholic Church, was arranged in 1281 when she was 10 years old.
Denis ruled Portugal for over 46 years.
He worked to reorganise his country's economy and gave an impetus to Portuguese agriculture.
He ordered the planting of a large pine forest (that still exists today) near Leiria to prevent the soil degradation that threatened the region and as a source of raw materials for the construction of the royal ships.
He was also known for his poetry, which constitutes an important contribution to the development of Portuguese as a literary language.
Tjuyu
Tjuyu( sometimes transliterated as Thuya or Thuyu) was an Egyptian noblewoman and the mother of queen Tiye, and the wife of Yuya.
She is the grandmother of Akhenaten, and great grandmother of Tutankhamun.
Hubba bint Hulail
Hubba bint Hulail was the grandmother of Hashim ibn' Abd Manaf, thus the great- great- great- grandmother of the Islamic" Nabī"( Prophet) Muhammad ibn Abdullah.

Question: Who is the paternal grandmother of Pedro Afonso, Count Of Barcelos?
Answer: Beatrice of Castile