Elizabeth of Celje
Elizabeth of Celje( 1441 – 1455), also Elizabeth of Cilli, was the first wife of Matthias Corvinus, the future King of Hungary.
Elizabeth of Hungary, Queen of Serbia
Elizabeth of Hungary the widow ("/Jelisaveta"; c. 1255–1313) was one of the daughters of King Stephen V of Hungary and his wife Elizabeth the Cuman.
She was a member of the House of Arpad and later became Queen consort of Serbia by her marriage to Stefan Uroš II Milutin of Serbia.
Louisa Cavendish-Bentinck
Caroline Louisa Cavendish- Bentinck( née Burnaby; 5 December 1832 – 6 July 1918) was the maternal grandmother of Queen Elizabeth The Queen Mother and the great- grandmother of Elizabeth II.
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.
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.
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.
Stephen V of Hungary
Stephen V (before 18 October 1239 – 6 August 1272, Csepel Island) was King of Hungary and Croatia between 1270 and 1272, and Duke of Styria from 1258 to 1260.
He was the oldest son of King Béla IV and Maria Laskarina.
King Béla had his son crowned king at the age of six and appointed him Duke of Slavonia.
Still a child, Stephen married Elizabeth, a daughter of a chieftain of the Cumans whom his father settled in the Great Hungarian Plain.
King Béla appointed Stephen Duke of Transylvania in 1257 and Duke of Styria in 1258.
The local noblemen in Styria, which had been annexed four years before, opposed his rule.
Assisted by King Ottokar II of Bohemia, they rebelled and expelled Stephen's troops from most parts of Styria.
After Ottokar II routed the united army of Stephen and his father in the Battle of Kressenbrunn on 12 July 1260, Stephen left Styria and returned to Transylvania.
Stephen forced his father to cede all the lands of the Kingdom of Hungary to the east of the Danube to him and adopted the title of junior king in 1262.
In two years, a civil war broke out between father and son, because Stephen accused Béla of planning to disinherit him.
They concluded a peace treaty in 1266, but confidence was never restored between them.
Stephen succeeded his father, who died on 3 May 1270, without difficulties, but his sister Anna and his father's closest advisors fled to the Kingdom of Bohemia.
Ottokar II invaded Hungary in the spring of 1271, but Stephen routed him.
In next summer, a rebellious lord captured and imprisoned Stephen's son, Ladislaus.
Shortly thereafter, Stephen unexpectedly fell ill and died.
Yolanda of Poland
Yolanda of Poland( also known as Helen; 1235 – 11 June 1298) was the daughter of King Béla IV of Hungary and Maria Laskarina.
She was the sister of Margaret of Hungary and Kinga of Poland( Cunegunda).
One of her paternal aunts was the Franciscan Elizabeth of Hungary.
Hannah Arnold
Hannah Arnold, also known as Hannah Waterman King, was the grandmother of Benedict Arnolds children.
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.

Question: Who is the paternal grandmother of Elizabeth Of Hungary, Queen Of Serbia?
Answer: Maria Laskarina