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.
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.
Áed Sláine
Áed mac Diarmato (died 604), called Áed Sláine (Áed of Slane), was the son of Diarmait mac Cerbaill.
Legendary stories exist of Áed's birth.
Saint Columba is said to have prophesied his death.
His descendants, the Síl nÁedo Sláine—the seed of Áed of Slane—were prominent in 7th and early 8th century Ireland.
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.
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).
Lyon Cohen
Lyon Cohen( 1868–1937) was a Polish- born Canadian businessman and a philanthropist.
He was the grandfather of singer/ poet Leonard Cohen.
Conall Laeg Breg
Conall Laeg Breg mac Áedo Sláine (died 612) was a King of Brega from the Síl nÁedo Sláine branch of the southern Ui Neill.
He was the son of the high king Áed Sláine mac Diarmato (died 604).
He ruled from 604-612.
He is not called King of Brega in the annals but is second in a poem on the rulers of Síl nÁedo Sláine in the "Book of Leinster".
His father had treacherously slain his nephew, Suibne mac Colmáin (died 600) of the Clann Cholmáin and was then himself slain in battle by Suibne's son Conall Guthbinn (died 635) setting off a feud among the southern Ui Neill.
As part of this feud Conall Laeg Breg was slain in the Battle of Odba by Óengus mac Colmáin (died 621) of Clann Cholmáin Bicc in 612.
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.
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

Question: Who is the paternal grandfather of Conall Laeg Breg?
Answer: Diarmait mac Cerbaill