Question: Who is Alfred Aetheling's paternal grandmother?

Knowledge 1: Alfred Aetheling
Ælfred Æþeling (English: "Alfred the Noble")(1005–1036) was one of the eight sons of the English king Æthelred the Unready.He and his brother Edward the Confessor were sons of Æthelred's second wife Emma of Normandy.King Canute became their stepfather when he married Æthelred's widow.Alfred and his brother were caught up in the power struggles at the start and end of Canute's reign. [SEP] Knowledge 2: Æthelred the Unready
Æthelred II (Old English: "Æþelræd", ; 966 – 23 April 1016), known as the Unready, was King of the English from 978 to 1013 and again from 1014 until his death.His epithet does not derive from the modern word "unready", but rather from the Old English "unræd" meaning "poorly advised"; it is a pun on his name, which means "well advised".Æthelred was the son of King Edgar and Queen Ælfthryth.He came to the throne at about the age of 12, following the assassination of his older half-brother, Edward the Martyr.His brother's murder was carried out by supporters of his own claim to the throne, although he was too young to have any personal involvement.The chief problem of Æthelred's reign was conflict with the Danes.After several decades of relative peace, Danish raids on English territory began again in earnest in the 980s.Following the Battle of Maldon in 991, Æthelred paid tribute, or Danegeld, to the Danish king.In 1002, Æthelred ordered what became known as the St. Brice's Day massacre of Danish settlers.In 1013, King Sweyn Forkbeard of Denmark invaded England, as a result of which Æthelred fled to Normandy in 1013 and was replaced by Sweyn.However, he returned as king for two years after Sweyn's death in 1014.Æthelred's 37-year reign was the longest of any Anglo-Saxon king of England, and was only surpassed in the 13th century, by Henry III.Æthelred was briefly succeeded by his son, Edmund Ironside, but he died after a few months and was replaced by Sweyn's son, Cnut.Another of Æthelred's sons, Edward the Confessor, became king in 1042.
Knowledge 1: Alfred Aetheling
Ælfred Æþeling (English: "Alfred the Noble")(1005–1036) was one of the eight sons of the English king Æthelred the Unready.He and his brother Edward the Confessor were sons of Æthelred's second wife Emma of Normandy.King Canute became their stepfather when he married Æthelred's widow.Alfred and his brother were caught up in the power struggles at the start and end of Canute's reign. [SEP] Knowledge 2: Hannah Arnold
Hannah Arnold, also known as Hannah Waterman King, was the grandmother of Benedict Arnolds children.
Knowledge 1: Alfred Aetheling
Ælfred Æþeling (English: "Alfred the Noble")(1005–1036) was one of the eight sons of the English king Æthelred the Unready.He and his brother Edward the Confessor were sons of Æthelred's second wife Emma of Normandy.King Canute became their stepfather when he married Æthelred's widow.Alfred and his brother were caught up in the power struggles at the start and end of Canute's reign. [SEP] Knowledge 2: 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.

Answer: Ælfthryth