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.
Anund Uppsale
Anund Uppsale or Anoundus,' Anund of Uppsala',( Old Norse:" Önundr Uppsali"), a son of Erik Björnsson of the House of Munsö, ruled Sweden together with his brother Björn at Haugi, according to Hervarar saga.
He is called" Uppsale" because he stayed at Old Upsala, the era's religious centre.
He and Björn are sometimes identified with similarly- named kings mentioned in Rimbert's Vita Ansgari and by Adam of Bremen.
Cabinet of Björn Þórðarson
The Cabinet of Björn Þórðarson was formed 16 December 1942.
Abd al-Muttalib
Abd al- Muttalib Shaybah ibn Hashim( c. 497 – 578) was the grandfather of Islamic prophet Muhammad.
John Westley
Rev. John Westley( 1636 – 78) was an English nonconformist minister.
He was the grandfather of John Wesley( founder of Methodism).
Prithvipati Shah
Prithvipati Shah( ?–1716) was the king of the Gorkha Kingdom in the Indian subcontinent, present- day Nepal.
He was the grandfather of Nara Bhupal Shah.
Erik Björnsson
Erik Björnsson was one of the sons of Björn Ironside and a semi-legendary king of Sweden of the House of Munsö, who would have lived in the late 9th century.
One of the few surviving Scandinavian sources that deal with Swedish kings from this time is "Hervarar saga".
It says:
Lyon Cohen
Lyon Cohen( 1868–1937) was a Polish- born Canadian businessman and a philanthropist.
He was the grandfather of singer/ poet Leonard Cohen.
Björn at Haugi
Björn at Haugi
("Björn at the Barrow" from the Old Norse word "haugr" meaning mound), Björn
på Håga, Björn II or Bern was, according to "Hervarar saga", a Swedish king and the son of Erik Björnsson, and
Björn ruled together in diarchy with his brother Anund Uppsale.
Erpr lútandi
Erpr lútandi was according to" Skáldatal" the court skald of the Swedish kings Eysteinn Beli and Björn at Haugi.
There are no extant poems by Erpr." Skáldatal" tells that Erpr committed the crime of killing in a sanctuary.
He avoided the death penalty by composing a" drápa" about Saurr konungshundr.
" Landnámabók" adds that he had a daughter named Lopthœna who was the wife of Bragi Boddason, another skald of king Eysteinn Beli. Lopthœna and Bragi were ancestors of Gunnlaugr ormstunga.

Question: Who is the paternal grandfather of Björn At Haugi?
Answer: Björn Ironside