Canute, Duke of Estonia
Canute or Knud Valdemarsen (1207 – 1260) was an illegitimate of King Valdemar II of Denmark, who became Duke of Revelia, Blekinge and Lolland.
Canute was the son of the king by his mistress, Helena Guttormsdotter, widow of Danish nobleman Esbern Snare and daughter of Guttorm, Riksjarl of Sweden.
His father gave him lands in Estonia as a hereditary duchy in 1219.
He was made Duke of Reval (Tallinn) in 1219, but was dispossessed as Denmark were thrown out by the Estonians in 1227.
As compensation, he was given Blekinge in 1242, which he held until his death.
Canute supported the younger rebel brothers, Abel and Christopher, against King Eric IV of Denmark in 1246, and was imprisoned at Stegeborg Castle.
The king forced him to exchange Blekinge temporarily for Lolland, but Blekinge was soon restored to Canute's possession.
Canute left two sons Eric, Duke of Halland (died 1304) and Lord Svantepolk Knudsen (died 1310), as well as a daughter who is said to have married a Folkung.
Canute's land of Blekinge, with Lister, was given to his great-grandson lord Knut Folkason in the 1330s by King Magnus VII of Norway.
Lord Knut's heirs continued to claim the lordship.
Ingeborg of Kalundborg
Ingeborg Esbensdatter of Kalundborg (died in Slesvig 1267) was an influential Danish landlord and vassal.
She was the daughter of Esbern Snare and the Swedish noble Helena Guttormsdotter, and by her mother the half sister of Canute, Duke of Estonia.
She married the nobleman Peder Strangesen (d. 1241).
Ingeborg was known for her donations to the church and was a powerful figure in Denmark by her ownership of her late father's castle, Kalundborg, and was called "Powerful Lady" and "Ingeborg of Kalundborg" because of it.
She seem to have favored the side of duke Eric Abelsen in his conflict with the Danish royal house in 1261.
The year after, she was forced to leave Kalundborg and flee to Slesvig.
John Templeton (botanist)
John Templeton( 1766–1825) was an early Irish naturalist and botanist.
He is often referred to as the" Father of Irish Botany".
He was the father of naturalist, artist and entomologist Robert Templeton.
Yasuichi Oshima
He is the father of manga artist Towa Oshima.
Obata Toramori
He was the father of Obata Masamori.
Cleomenes II
Cleomenes II( died 309 BC) was Agiad King of Sparta from 369 to 309 BC.
The son of Cleombrotus I, he succeeded his brother Agesipolis II.
He was the father of Acrotatus I, the father of Areus I, and of Cleonymus, the father of Leonidas II.
Ronald Mourad Cohen
Sir Ronald Mourad Cohen( born 1 August 1945) is an Egyptian- born British businessman and political figure.
He is the chairman of The Portland Trust and Bridges Ventures.
He has been described as" the father of British venture capital" and" the father of social investment".
Lars Eliasson
He is the father of the later Member of Parliament Anna Eliasson.
Östen Mäkitalo
Östen Mäkitalo( 27 August 1938 – 16 June 2011) was a Swedish electrical engineer.
He is considered to be the father of the Nordic Mobile Telephone( NMT) system and many times the father of cellular phone.
Arthur Beauchamp
Arthur Beauchamp( 1827 – 28 April 1910) was a Member of Parliament from New Zealand.
He is remembered as the father of Harold Beauchamp, who rose to fame as chairman of the Bank of New Zealand and was the father of writer Katherine Mansfield.

Question: Who is Ingeborg Of Kalundborg's father?
Answer: Valdemar II of Denmark