Jigme Namgyel Wangchuck
Jigme Namgyel Wangchuck (born 5 February 2016) is the first child and heir apparent of King Jigme Khesar Namgyel Wangchuck of Bhutan and his wife, Queen "Ashi" Jetsun Pema.
His name was announced on 16 April 2016.
Prior to the announcement, he was known only as The Gyalsey, which means "prince".
Before his birth his paternal uncle Prince Jigyel Ugyen of Bhutan was the heir presumptive to King Jigme Khesar Namgyel.
In honor of his birth, 108,000 trees were planted by thousands of volunteers in Bhutan.
He is expected to become the sixth Druk Gyalpo (King of Bhutan).
John Westley
Rev. John Westley( 1636 – 78) was an English nonconformist minister.
He was the grandfather of John Wesley( founder of Methodism).
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.
Lyon Cohen
Lyon Cohen( 1868–1937) was a Polish- born Canadian businessman and a philanthropist.
He was the grandfather of singer/ poet Leonard Cohen.
Jigyel Ugyen Wangchuck
Prince" Dasho" Jigyel Ugyen Wangchuck( born 16 July 1984) is a Bhutanese prince.
Born as the second son of then- King of Bhutan Jigme Singye Wangchuck, he was the heir presumptive to the throne of Bhutan until 5 February 2016, when his nephew Jigme Namgyel Wangchuck, his older half- brother and current King Jigme Khesar Namgyel Wangchuck's son, was born.
Prince Jigyel
Ugyen is the second son of King Jigme Singye Wangchuck from Queen Mother" Ashi" Dorji Wangmo Wangchuck.
He has an older sister, Princess" Ashi" Sonam Dechen Wangchuck, as well as four half- brothers and four half- sisters.
Jigme Khesar Namgyel Wangchuck
Jigme Khesar Namgyel Wangchuck (ဂျိဂမိ ခီသာ နံဂျယ်လ် ဝါင်ချုက် , Wylie: "jigs med ge sar rnam rgyal dbang phyug";
born 21 February 1980) is the Druk Gyalpo or "Dragon King" of the Kingdom of Bhutan.
After his father Jigme Singye Wangchuck abdicated the throne in his favour, he became the monarch on 9 December 2006.
A public coronation ceremony was held on 6 November 2008, a year that marked 100 years of monarchy in Bhutan.
Abd al-Muttalib
Abd al- Muttalib Shaybah ibn Hashim( c. 497 – 578) was the grandfather of Islamic prophet Muhammad.
Guillaume Wittouck
Guillaume Wittouck( 1749- 1829) was a Belgian lawyer and High Magistrate.
He was the Grandfather of industrialist Paul Wittouck.
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.

Question: Who is Jigme Namgyel Wangchuck's paternal grandfather?
Answer: Jigme Singye Wangchuck