Abd al-Muttalib
Abd al- Muttalib Shaybah ibn Hashim( c. 497 – 578) was the grandfather of Islamic prophet Muhammad.
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.
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
Congal Cennfota mac Dúnchada
Congal Cennfota mac Dúnchada( died 674) was a Dal Fiatach king of Ulaid.
He was the son of Dúnchad mac Fiachnai( died circa 644), a previous king.
He ruled from 670 to 674.
His nickname Cennfota means" Long- headed".
The Dal Fiatach dominated the kingship of Ulster from 637 to 674.
Family strife was a common theme among the dynasty at this time.
In 647 he killed or slew his uncle Máel Cobo mac Fiachnai the king of Ulaid.
However Mael Cobhas son Blathmac mac Máele Cobo is mentioned as king of Ulaid before him in the annals so he probably did not acquire the overlordship of Ulaid till after Blathmac's death in 670.
Congal suffered the same fate as his uncle when he was slain or killed by his cousin's son Bécc Bairrche mac Blathmaic( died 718) in 674.
Congal had a daughter named Conchenn ingen Congaill who was married first to Fínsnechta Fledach( died 695) of the Síl n Áedo Sláine, high king of Ireland and Congal may have had some support from the Ui Neill.
She married secondly Bécc Bairrche.
Máel Cobo mac Fiachnai
Máel Cobo mac Fiachnai (died 647) was a Dal Fiatach king of Ulaid.
He was the son of Fiachnae mac Demmáin (died 627) and half-brother of Dúnchad mac Fiachnai (died c. 644), previous kings.
He ruled from c. 644-647.
The Dal Fiatach recovered the overlordship of Ulaid after the death of Congal Cáech at the Battle of Mag Roth in 637 and were to retain it until 674.
Family strife was a common theme among the dynasty at this time.
Máel Cobo was himself killed or slain by his nephew Congal Cennfota mac Dúnchada (died 674) in 647.
His sons were Blathmac mac Máele Cobo (died 670), a king of Ulaid and Óengus whose grandson Cathal mac Muiredaig was ancestor of the Leth Cathail sept of the Dal Fiatach.
Blathmac mac Máele Cobo
Blathmac mac Máele Cobo( died 670) was a Dál Fiatach ruler of the over- kingdom of Ulaid.
He was the son of Máel Cobo mac Fiachnai( died 647).
He ruled from 647 to 670.
Eochaid mac Fiachnai
Eochaid mac Fiachnai( died 810) was a Dal Fiatach king of Ulaid, which is now Ulster, Ireland.
He was the son of Fiachnae mac Áedo Róin( died 789), a previous king.
He ruled from 790 to 810.
Eochaid first appears in the annals in 776.
In that year he gave his support to Tommaltach mac Indrechtaig( died 790) in a civil war among the rival Dal nAraide family.
They defeated and slew the incumbent king Cináed Ciarrge mac Cathussaig and his ally, Dúngal king of the Uí Tuirtri( an Airgialla tribe west of Lough Neagh) at the Battle of Drong.
His father had restored the fortunes of the Dal Fiatach dynasty but upon his death a succession struggle broke out.
Eochaid was challenged for the kingship by his kinsmen Tommaltach mac Cathail.
Tommaltach was the great grandson of Óengus, son of Máel Cobo mac Fiachnai( died 647) king of Ulaid and this branch( called the Cenél n Óengusa) threatened to be excluded from the throne.
Tommaltach was defeated and slain in battle by Eochaid.
However Tommlatach's branch of the family remained based in Leth Cathail( Lecale)-" Cathal's Half" in southern modern County Down( also known as Mag Inis).
Tommaltach mac Indrechtaig of Dal nAraide had profited by the civil war among the Dal Fiatach to acquire the throne of all Ulaid.
He died the next year in 790 and in that year the annals also record a slaughter of the Dal Fiatach by the Dál nAraidi.
Whether this occurred before or after Tommaltach's death is uncertain.
Eochaid became King of Ulaid in 790.
In 801 The Ulaid went to war with the Uí Echach Cobo in the west part of county Down, probably to impose their authority.
The Ulaid were victorious and slew the King of Coba, Eochu mac Aililla.
On the side of the Ulaid, Cairell mac Cathail of the Leth Cathail branch was slain.
In 809 the high king Áed Oirdnide campaigned against Ulaid and defeated them ravaging from the Bann to Strangford Lough.
The motive for this conflict was apparently the killing of Dúnchú, superior of Tulach Léis( Tullylisk, County Down), by the Ulaid.
A civil war then followed in which Eochaid was defeated by his brother Cairell mac Fiachnai( died 819).
The annals report that Eochaid escaped from this battle and historians place his death in 810.
Eochaid may be associated with the establishment of Dún Echdach( Duneight) which became the royal seat of the Dal Fiatach as they shifted their power northwards by the 9th century from their old royal seat at Downpatrick.
The sons of Eochaid included Muiredach mac Eochada( died 839), a King of Ulaid, and Áed mac Eochada who fathered three kings of Ulaid.
Lyon Cohen
Lyon Cohen( 1868–1937) was a Polish- born Canadian businessman and a philanthropist.
He was the grandfather of singer/ poet Leonard Cohen.
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.
Fiachnae mac Demmáin
Fiachnae mac Demmáin (died 627) was King of Ulaid from 626 to 627.
Sometimes called Fiachnae Dubtuinne.
He was a member of the Dal Fiatach and nephew of Baetan mac Cairill (died 581) of Ulaid.
He was the son of Demmán mac Cairell (died 572).
He succeeded his uncle as king of the Dal Fiatach in 581.
His first mention in the Irish annals is the battle of Cúl Caíl (possibly Kilkeel, modern County Down) in 601 where he was defeated by Fiachnae mac Baetain of the Dal nAraide.
The annals mention Fiachnae mac Baetan went against him
so was probably the aggressor.
This was part of the struggle of these two rival clans for the overlordship of Ulaid.
In 626 was fought the Battle of Leithit Midind at Drung (Knocklayd, modern County Antrim) between these two rivals at which Fiachnae mac Demmáin was
the victor and Fiachnae mac Baetan was slain.
The annals say the battle was fought by him which implies he was the aggressor.
He now becomes King of Ulaid but was himself defeated and slain by the King of Dalriada, Connad Cerr at the Battle of Ard Corainn in 627.
The "Annals of Clonmacnoise" claim that this was in revenge for the slaying of Fiachnae mac Baetan.
His wives were:
Cumne Dub, daughter of Furudrán mac Béicce of the Uí Tuirtri.
She was the mother of Dúnchad mac Fiachnai
(died circa 644),a king of Ulaid and of a daughter Dub Lacha who married Mongán mac Fiachnai (died 625), the son of his rival Fiachnae mac Baetan.
Cumne(Cummíne
) Find, daughter of Báetán Cáech of DalnAraide and sister of Fiachnae mac Baetan.
She was the mother of Máel Cobo mac Fiachnae (died 647), a king of Ulaid and a son named Suibne.
He was ancestor of all later Dal Fiatach kings.6

Question: Who is the paternal grandfather of Máel Cobo Mac Fiachnai?