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.
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.
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.
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.
Svend Tronkræver
Svend Tronkræver or Svend Svendsen (died 1104) was a Danish prince, one of the illegitimate sons of king Sweyn II of Denmark.
He shared the same name with his brother Sweyn the Crusader and another brother.
When his brother Eric Evergood died in July 1103 during a pilgrimage, Svend tried to become the next King of Denmark.
On the way to the royal elections at Viborg, he became ill.
Not wanting any rivals to get there ahead of him, he continued the journey anyway, but died of hardships.
Instead, his younger brother Niels, the last surviving son of King Sweyn II, was elected king the following year.
He was the father of Henrik Skadelår and grandfather of King Magnus II of Sweden.
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.
Hannah Arnold
Hannah Arnold, also known as Hannah Waterman King, was the grandmother of Benedict Arnolds children.
Sweyn II of Denmark
Sweyn II Estridsson  (– 28 April 1076) was King of Denmark from 1047 until his death in 1076.
He was the son of Ulf Thorgilsson and Estrid Svendsdatter, and the grandson of King Sweyn I Forkbeard through his mother's line.
He was married three times, and fathered 20 children or more out of wedlock, including the five future kings Harald III Hen, Canute IV
the Saint, Oluf
I Hunger, Eric
I Evergood, and Niels.
He was courageous in battle, but did not have much success as a military commander.
His skeleton reveals that he was a tall, powerfully built man who walked with a limp.
Henrik Skadelår
Henrik Skadelår( c. 1090- 4 June 1134) was a Danish prince, the son of Svend Tronkræver, an illegitimate son of king Sweyn II of Denmark.
He was the father of King Magnus II of Sweden.
He died in the Battle of Fotevik.
After the murder on his cousin Knud Lavard in 1131," Henrik Skadelår" was mentioned as a possible future king of Denmark.
However, his uncle Niels survived Henrik by three weeks.
Gülbahar Hatun (wife of Mehmed II)
Gülbahar Hatun( 1432 – 1492) was the consort of Sultan Mehmed II, and mother of Sultan Bayezid II of the Ottoman Empire and the grandmother of Selim I.

Question: Who is Svend Tronkræver's paternal grandmother?
Answer: Estrid Svendsdatter