Princess Ingeborg of Denmark
Princess Ingeborg of Denmark( Ingeborg Charlotte Caroline Frederikke Louise; 2 August 1878 – 12 March 1958), was a Princess of Sweden by marriage to Prince Carl, Duke of Västergötland.
She was the daughter of Frederick VIII of Denmark, and the maternal grandmother of Harald V of Norway, Baudouin and Albert II of Belgium, the matrilineal great grandmother of Henri, Grand Duke of Luxembourg, and the paternal great- grandaunt of Carl XVI Gustaf of Sweden.
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.
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.
Princess Caroline-Mathilde of Denmark
Princess Caroline- Mathilde of Denmark( 27 April 1912 – 12 December 1995) was a daughter of Prince Harald of Denmark and granddaughter of King Frederick VIII of Denmark.
As the wife of Knud, Hereditary Prince of Denmark, she became Hereditary Princess of Denmark.
Harald III of Denmark
Harald III (Harald the Whetstone, ; – April 17, 1080) was King of Denmark from 1076 to 1080.
Harald III was an illegitimate son of Danish king Sweyn II Estridsson, and contested the crown with some of his brothers.
He was a peaceful ruler who initiated a number of reforms.
Harald was married to his cousin Margareta Hasbjörnsdatter, but did not leave any heirs, and was succeeded by his brother Canute IV the Saint.
Four of his half-brothers were in turn crowned Danish kings, with his youngest brother becoming the Danish king known as Harald IV (Harald the Young), Danish: Harald Olpe.
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.
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.
Elisiv of Kiev
Elisaveta Yaroslavna of Kiev( Norwegian:" Ellisif" or" Elisiv", 1025 – c. 1067), was a Princess of Kiev and Queen Consort of King Harald III of Norway.
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.

Question: Who is the paternal grandmother of Harald Iii Of Denmark?
Answer: Estrid Svendsdatter