John Westley
Rev. John Westley( 1636 – 78) was an English nonconformist minister.
He was the grandfather of John Wesley( founder of Methodism).
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.
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.
Colin Campbell, 1st Earl of Argyll
Colin Campbell, 1st Earl of Argyll (c. 1433 – 10 May 1493), was a medieval Scottish nobleman, peer, and politician.
He was the son of Archibald Campbell, Master of Campbell and Elizabeth Somerville.
He had the sobriquet Colin Mulle, Bold Earl Colin.
Iseabail Ní Mheic Cailéin
Iseabail Ní Mheic Cailéin, Gaelic noblewoman and poet, fl. 1500.
A daughter of Colin Campbell, 1st Earl of Argyll (died 1493).
Three poems by her are preserved in the Book of the Dean of Lismore - "Atá fleasgach ar mo thíÉistibh, a Luchd an Tighe-se" and "Is mairg dá ngalar an grádh".
Thomas Owen Clancy Clancy notes that "Éistibh, a Luchd an Tighe-seis a fairly obscene boast to the court circle on the size and potency of her household priest's penis.
The authenticity of the attribution to Iseabail has been questioned, but without substantial grounds."
Lyon Cohen
Lyon Cohen( 1868–1937) was a Polish- born Canadian businessman and a philanthropist.
He was the grandfather of singer/ poet Leonard Cohen.
Guillaume Wittouck
Guillaume Wittouck( 1749- 1829) was a Belgian lawyer and High Magistrate.
He was the Grandfather of industrialist Paul Wittouck.
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.
Abd al-Muttalib
Abd al- Muttalib Shaybah ibn Hashim( c. 497 – 578) was the grandfather of Islamic prophet Muhammad.

Question: Who is Iseabail Ní Mheic Cailéin's paternal grandfather?
Answer: Archibald Campbell, Master of Campbell