Abdullah bin Hamad bin Isa Al Khalifa
Abdullah bin Hamad bin Isa Al Khalifa (born 30 June 1976) is the second son of the present King of Bahrain, Hamad ibn Isa Al Khalifah and his first wife, Sabika bint Ibrahim Al Khalifa.
Like all members of the royal family, Abdullah sits as a senior member of the civil judiciary.
In addition to his government positions, Abdullah is chairman of the Bahrain Motor Federation and the Commission Internationale de Karting.
Suhaim bin Hamad Al Thani
Suhaim bin Hamad bin Abdullah bin Jassim bin Muhammed Al Thani( 1933- 21 August 1985) was a member of the ruling family of Qatar who served as the country's foreign minister.
His brother, Khalifa bin Hamad Al Thani, was the emir of Qatar.
Saud bin Abdelaziz bin Hamad Al Thani
Shaikh Saud bin Abdelaziz bin Hamad bin Abdullah bin Jassim bin Muhammed Al Thani( 1949 in Qatar)
He is the cousin of Qatari ruler Hamad bin Khalifa Al Thani, grandson of Hamad bin Abdullah Al Thani and great- grandson of Abdullah bin Jassim Al Thani.
Estimates of his net worth range from 3- 12 billion USD.
Salman, Crown Prince of Bahrain
Prince Salman bin Hamad bin Isa Al Khalifa, Deputy King, Crown Prince of Bahrain( born 21 October 1969) is the heir apparent and first deputy prime minister of the Kingdom of Bahrain.
He is also the deputy supreme commander of the Bahrain Defense Force.
Hala bint D'aij Al Khalifa
Shaikha Hala bint
D'aij Al Khalifa
( Arabic: هالة بنت دعيج آل خليفة, died 10 June 2018) was the former wife of Prince Salman bin Hamad bin Isa Al Khalifa, the Crown Prince, Deputy Supreme Commander and First Deputy Prime Minister, until 2005.
Hala was the youngest daughter of D'aij bin Khalifa Al Khalifa, the Assistant Under- Secretary of the Ministry of Finance& National Economy.
She was the Honorary President of the Information Centre for Women& Children, and Chair of the Bahrain Society for Mental Retardation.
Hala and Salman had two sons and two daughters:
Her eldest son, Isa is second in line to the throne after his father.
She died on 10 June 2018.
Hamad bin Isa Al Khalifa
Hamad bin Isa bin Salman Al Khalifa (born 28 January 1950) is the King of Bahrain.
He has been the monarch of Bahrain since 6 March 1999, initially reigning as emir, and from 14 February 2002, as the first king.
He is the son of Isa bin Salman Al Khalifa, the previous and first emir.
The country has been ruled by the Al Khalifa dynasty since 1783.
Mohammed bin Hamad bin Abdullah Al Thani
Shaikh Muhammad bin Hamad bin Abdullah bin Jassim bin Muhammed Al Thani was born in 1929.
Sabika bint Ibrahim Al Khalifa
Sabika bint Ibrahim Al Khalifa( born in Muharraq in 1948) is the Princess consort of Bahrain as the first wife of the present King of Bahrain, Hamad bin Isa Al Khalifa, and the mother of the Crown Prince, Salman bin Hamad bin Isa Al Khalifa.
Hamad bin Suhaim Al Thani
Sheikh Hamad bin Suhaim bin Hamad bin Abdullah bin Jassim bin Muhammed Al Thani( born 1958 in Doha), is a former government minister of Qatar.
He is the son of Sheikh Suhaim bin Hamad Al Thani, the granduncle( and father- in- law, through the current Emir's first marriage to Hamad's daughter Sheikha Jawahir bint Hamad bin Suhaim al- Thani) of the current Emir of Qatar, Tamim bin Hamad Al Thani.
Khalifa bin Hamad Al Thani
Sheikh Khalifa bin Hamad bin Abdullah bin Jassim bin Mohammed Al Thani( 17 September 1932 – 23 October 2016) was the Emir of Qatar from 27 February 1972 until he was deposed by his son Hamad bin Khalifa on 27 June 1995.
He was the grandfather of the current Emir, Tamim bin Hamad Al Thani.

Question: Who is the paternal grandfather of Abdullah Bin Hamad Bin Isa Al Khalifa?