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.
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.
Hedwig of Gudensberg
Hedwig of Gudensberg, also known as" Hedwig of Hesse"( 1098 – 1148) was German regent: she served as regent of Thuringia during the minority of her son Louis II from 1140.
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.
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.
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.
Jadwiga of Kalisz
Jadwiga of Kalisz (Polish: "Jadwiga Bolesławówna"; 1266 – 10 December 1339) was a Queen of Poland by marriage to Władysław
I the Elbow-high.
She was the mother of the last Piast King of Poland, Casimir III.
She was the second of three daughters born to Bolesław the Pious and Saint Yolanda of Hungary.
In 1293, Jadwiga married Władysław
I the Elbow-high.
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.
Hannah Arnold
Hannah Arnold, also known as Hannah Waterman King, was the grandmother of Benedict Arnolds children.

Question: Who is Jadwiga Of Kalisz's maternal grandmother?
Answer: Maria Laskarina