Ermentrude, daughter of Louis the Stammerer
Ermentrude (French: "Ermentrude de France"; 875/78–?) was a Princess of France in the Middle Ages, named after her grandmother, Queen Ermentrude of Orléans.
Ermentrude was a daughter of King Louis the Stammerer and his first wife, Ansgarde of Burgundy, whom he married in 862 with official sanction.
Despite having several children together (2 sons, Louis and Carloman and 3 daughters, Giselle, Hildegarde and Ermentrude) with Ansgarde of Burgundy, her father had the marriage annulled, prior to his marriage with Adelaide of Paris in 875.
After the death of Louis, the struggle for power in the kingdom probably led to Ermentrude’s marriage to Evrard de Sulichgau, son of Unroch III of Friuli.
Ermentrude’s daughter, Cunigunda, first in 909 married Wigeric of Lotharingia, count of Bidgau and count palatine of Lotharingia, then in 922 married Ricwin, Count of Verdun (d. 923).
Henry Krause
Henry J." Red" Krause, Jr.( August 28, 1913 – February 20, 1987) was an American football offensive lineman in the National Football League for the Brooklyn Dodgers and the Washington Redskins.
He played college football at St. Louis University.
He is the grandfather of Jennifer Krause
He is the great grandfather of Payton Hoeing
Abd al-Muttalib
Abd al- Muttalib Shaybah ibn Hashim( c. 497 – 578) was the grandfather of Islamic prophet Muhammad.
Lyon Cohen
Lyon Cohen( 1868–1937) was a Polish- born Canadian businessman and a philanthropist.
He was the grandfather of singer/ poet Leonard Cohen.
Fred Le Deux
Frederick" Fred" Le Deux( born 4 December 1934) was an Australian rules footballer who played with Geelong in the Victorian Football League( VFL).
He is the grandfather of Tom Hawkins.
Kaya Alp
Kaya Alp was, according to Ottoman tradition, the son of Kızıl Buğa and the father of Suleyman Shah, who was, in turn, the grandfather of Ertuğrul, and the great grandfather of the Ottoman Empire founder, Osman I.
Zhao Shoushan
Zhao Shoushan( 12 November 1894 – 20 June 1965) was a KMT general and later Chinese Communist Party politician.
He is the grandfather of Zhao Leji.
Ansgarde of Burgundy
Ansgarde of Burgundy (d. 880/882) was a French queen of Aquitaine, but never of West Francia, the daughter of Hardouin of Burgundy.
She secretly married Louis II of France before he was king; her sons became Louis III and Carloman II of France.
Because Charles the Bald wished to marry his son to Adelaide of Paris, he had to seek a papal annulment; this he did, and Adelaide married Louis in February 875.
Ansgarde was thus repudiated, but at the death of Louis II in 879 she worked to ensure that her sons could mount the throne of France themselves.
To that end, she sought to revisit the subject of her divorce with the archbishop of Reims.
Adelaide, however, was pregnant, and gave birth to a son on September 17 of that year, which thus called into doubt the inheritance of Ansgarde's own sons.
Ansgarde and her sons attacked Adelaide's marriage, accusing her of adultery; consequently, Louis and Carloman mounted the throne together.
However, both died without issue, and after a long and difficult process Adelaide finally saw her son confirmed as Charles III, the only legitimate heir to the throne.
Ansgarde passes into obscurity after this episode, and the date of her death is not conclusively known.
John Westley
Rev. John Westley( 1636 – 78) was an English nonconformist minister.
He was the grandfather of John Wesley( founder of Methodism).
Cunigunda of France
Cunigunda( c. 893 – aft. 923) was the daughter of Ermentrude of France, daughter in turn of Louis the Stammerer, king of the Franks.
The identity of her father is unknown.
In 898 her uncle Charles III gained control as king of the Franks, changing Cunigunda's life for the better.

Question: Who is Ermentrude, Daughter Of Louis The Stammerer's maternal grandfather?
Answer: Hardouin of Burgundy