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.
Charles the Bald
Charles ΙΙ the Bald (13 June 823 – 6 October 877) was the king of West Francia (843–877), king of Italy (875–877) and emperor of the Carolingian Empire (875–877).
After a series of civil wars during the reign of his father, Louis
the Pious, Charles succeeded, by the Treaty of Verdun (843), in acquiring the western third of the Carolingian Empire.
He was a grandson of Charlemagne and the youngest son of Louis the Pious by his second wife, Judith.
Guillaume Wittouck
Guillaume Wittouck( 1749- 1829) was a Belgian lawyer and High Magistrate.
He was the Grandfather of industrialist Paul Wittouck.
John Westley
Rev. John Westley( 1636 – 78) was an English nonconformist minister.
He was the grandfather of John Wesley( founder of Methodism).
Abd al-Muttalib
Abd al- Muttalib Shaybah ibn Hashim( c. 497 – 578) was the grandfather of Islamic prophet Muhammad.
Lothair the Lame
Lothair the Lame ("c".
848 – 865) was a French prince, the third son and fourth child of Charles the Bald and Ermentrude of Orleans.
As he was born crippled, his parents sent him away to a monastery early in life.
In 861, he became a monk.
In his last years he was abbot of Montier-en-Der and Saint-Germain of Auxerre, where he died in 865 at the age of 17 or 18.
Henry Bryant (naturalist)
Henry Bryant( May 12, 1820 – February 2, 1867) was an American physician and naturalist.
He was the grandfather of Henry Bryant Bigelow.
Fujiwara no Nagara
, also known as Fujiwara no Nagayoshi, was a Japanese statesman, courtier and politician of the early Heian period.
He was the grandfather of Emperor Yōzei.
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.
Lyon Cohen
Lyon Cohen( 1868–1937) was a Polish- born Canadian businessman and a philanthropist.
He was the grandfather of singer/ poet Leonard Cohen.

Question: Who is Lothair The Lame's paternal grandfather?
Answer: Louis the Pious