Guillaume Wittouck
Guillaume Wittouck( 1749- 1829) was a Belgian lawyer and High Magistrate.
He was the Grandfather of industrialist Paul Wittouck.
Lyon Cohen
Lyon Cohen( 1868–1937) was a Polish- born Canadian businessman and a philanthropist.
He was the grandfather of singer/ poet Leonard Cohen.
Ferdinand III of Castile
Ferdinand III (Spanish: Fernando III), 1199/120130 May 1252, called the Saint ("el Santo"), was King of Castile from 1217 and King of León from 1230 as well as King of Galicia from 1231.
He was the son of Alfonso IX of León and Berenguela of Castile.
Through his second marriage he was also Count of Aumale.
Ferdinand III was one of the most successful kings of Castile, securing not only the permanent union of the crowns of Castile and León, but also masterminding the most expansive campaign of Reconquista yet.
By military and diplomatic efforts, Ferdinand greatly expanded the dominions of Castile into southern Spain, annexing many of the great old cities of al-Andalus, including the old Andalusian capitals of Córdoba and Seville, and establishing the boundaries of the Castilian state for the next two centuries.
Ferdinand was canonized in 1671 by Pope Clement X and, in Spanish, he is known as "Fernando el SantoSan Fernando" or "San Fernando Rey".
Places such as the cities of San Fernando, Pampanga and San Fernando, La Union; the Diocese of Ilagan and the San Fernando de Dilao Church in Paco, Manila in the Philippines; and in California, United States, the City of San Fernando and the San Fernando Valley, were all named after him (namesakes) and placed under his patronage.
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).
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.
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 I, Lord of Polanen
John I, Lord of Polanen( – 26 September 1342) was Lord of Polanen, Lord of De Lek and Lord of Breda.
John II, Lord of Polanen
John III, Lord of Polanen( – 3 November 1378 in Breda) was Lord of Polanen, Lord of De Lek and Lord of Breda.
Manuel of Castile
Manuel of Castile (1234 – 25 December 1283, The first Lord of Villena and Peñafiel, Cuéllar, and Escalona, was an "Infante", son of Ferdinand III of Castile and his wife Elisabeth of Hohenstaufen.

Question: Who is the paternal grandfather of Manuel Of Castile?
Answer: Alfonso IX of León