Abd al-Muttalib
Abd al- Muttalib Shaybah ibn Hashim( c. 497 – 578) was the grandfather of Islamic prophet Muhammad.
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.
John Mackay (poet)
John Mackay( 1656–1754), known as( The Blind Piper), was a Scottish Gaelic poet and composer, and the grandfather of William Ross.
John Westley
Rev. John Westley( 1636 – 78) was an English nonconformist minister.
He was the grandfather of John Wesley( founder of Methodism).
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
Lyon Cohen
Lyon Cohen( 1868–1937) was a Polish- born Canadian businessman and a philanthropist.
He was the grandfather of singer/ poet Leonard Cohen.
Ailill Caisfiaclach
Ailill Caisfiaclach ("having crooked/hateful teeth"), son of Connla Cáem, was, according to medieval Irish legends and historical traditions, a High King of Ireland.
He succeeded his father, and reigned for twenty-five years, until he was killed by Adamair, the son of Fer Corb
the man who had killed Ailill's grandfather.
The "Lebor Gabála Érenn" synchronises his reign with that of Ptolemy V Epiphanes in Egypt (204–181 BC).
Geoffrey Keating's "Foras Feasa ar Éirinn" dates his reign from 315 to 290 BC, the "Annals of the Four Masters" from 443 to 418 BC.
Eochaid Ailtlethan
Eochaid (or Eochu)
Ailtlethan ("broad blade"), son of Ailill Caisfiaclach, was, according to medieval Irish legends and historical traditions, a High King of Ireland.
According to the "Lebor Gabála Érenn", he took the throne after overthrowing and killing the previous incumbent, Adamair, and ruled for eleven years, until he was killed in battle by Fergus Fortamail.
The "Lebor Gabála Érenn" synchronises his reign with that of Ptolemy V Epiphanes in Egypt (204–181 BC).
The chronology of Geoffrey Keating's "Foras Feasa ar Éirinn" dates his reign to 285–274 BC, that of the "Annals of the Four Masters" (which gives him a reign of seventeen years) to 414–396 BC.
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.
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.

Question: Who is the paternal grandfather of Eochaid Ailtlethan?
Answer: Connla Cáem