Al-Mayassa bint Hamad bin Khalifa Al-Thani
Sheikha Al-Mayassa bint Hamad bin Khalifa Al-Thani (born 1983) is the sister of Qatar's ruling Emir Tamim bin Hamad Al Thani, and daughter of the country's Father Emir Hamad bin Khalifa Al Thani and former First Lady Moza bint Nasser.
Al-Mayassa was declared the most influential person in art on ArtReview's Power 100, and prominently appears on the Time 100, and
Forbes' The World's 100 Most Powerful Women.
Al-Mayassa serves as Chairperson of Qatar Museums, and it was reported by Bloomberg that her annual acquisition budget on behalf of the organization is estimated at $1 billion.
Al Mayassa is believed to have been the purchaser of Paul Gauguin's "When Will You Marry?"
in 2015 for $300 million, a record price for a painting, Cezanne's "The Card Players" in 2012 for $250 million, as well as Mark Rothko's "White Center (Yellow, Pink and Lavender on Rose)
" in 2007 for $70 million, a Damien Hirst pill cabinet for $20 million and works by Jeff Koons, Andy Warhol, Roy Lichtenstein and Francis Bacon.
She has staged major exhibitions in Qatar with Takashi Murakami, Richard Serra and Damien Hirst.
Hind bint Hamad bin Khalifa Al-Thani
Sheikha Hind bint Hamad Al- Thani of Qatar( born 15 August 1984) serves as Vice Chairperson and CEO of Qatar Foundation for Education, Science and Community Development( QF), a private non-profit organization founded in 1995 by His Highness the Father Amir Sheikh Hamad Bin Khalifa Al Thani, and Her Highness Sheikha Moza bint Nasser, co-founder and chairperson of Qatar Foundation.
Jassim bin Hamad bin Khalifa Al Thani
Jassim bin Hamad bin Khalifa Al Thani( born 25 August 1978) is the former heir apparent of Qatar.
He is the third son of the former Emir of Qatar, Sheikh Hamad bin Khalifa Al Thani, and the first child of the Emir with his second wife, Sheikha Moza bint Nasser Al Missned.
Hamad bin Khalifa Al Thani
Sheikh Hamad bin Khalifa bin Hamad bin Abdullah bin Jassim bin Mohammed Al Thani (born 1 January 1952) is a member of the ruling Al Thani Qatari royal family.
He was the ruling Emir of Qatar from 1995 to 2013.
The Qatari government now refers to him as His Highness the Father Emir.
Hamad seized power in a bloodless palace "coup d'état" in 1995.
During his 18-year rule, Qatar's natural gas production reached 77 million tonnes, making Qatar the richest country in the world per capita with the average income in the country US$86,440 a year per person.
During his reign, several sports and diplomatic events took place in Qatar, including the 2006 Asian Games, 2012 UN Climate Change Conference, Doha Agreement, Fatah–Hamas Doha Agreement, and it was decided that the 2022 FIFA World Cup will be held in the country.
He established the Qatar Investment Authority; by 2013, it had invested over $100 billion around the world, most prominently in The Shard, Barclays Bank, Heathrow Airport, Harrods, Paris Saint-Germain F.C., Volkswagen, Siemens and Royal Dutch Shell.
During Hamad's rule, Qatar hosted two US military bases.
It also maintained close relations with Iran.
He supported and funded rebel movements, particularly in Libya and Syria during the Arab Spring, while maintaining political stability at home .
The Sheikh founded news media group Al Jazeera, through which he maintained his influence over the Arab world.
He also played a part in negotiations between the US and the Taliban.
In June 2013, Hamad, in a brief televised address, announced that he would hand power to his fourth son, Tamim bin Hamad Al Thani.
Thani bin Hamad bin Khalifa Al-Thani
Sheikh Thani bin Hamad bin Khalifa Al-Thani is the brother of the Emir of Qatar Tamim bin Hamad Al Thani, and son of the country's Father Emir Hamad bin Khalifa Al Thani.
Al-Thani sits on the board of directors of the Doha Film Institute and International Bank of Qatar.
Al-Thani has met with numerous heads of state on behalf of the Qatari government, including Sudan's President Omar al-Bashir in Khartoum, Sudan, April 2017, and Turkey's President Recep Tayyip Erdoğan in Ankara, Turkey, June 2016.
In September 2016, alongside Qatar's Emir and foreign minister, he attended the Seventy-first session of the United Nations General Assembly.
In September 2015, Al-Thani, with his family, visited the Ruler of Dubai and Vice President and Prime Minister of the United Arab Emirates, Mohammed bin Rashid Al Maktoum, at Zabeel Palace, to express condolences on the death of the Ruler's son Rashid bin Mohammed Al Maktoum.
In April 2017, Al-Thani visited Saudi Arabia's Governor of Mecca, Khalid bin Faisal Al Saud, to share his condolences on the death of Prince Khalid's brother Saad bin Faisal.
Al-Thani has attended several equestrian events on behalf of Qatar's royal family including the Ascot Gold Cup at Ascot Racecourse, and the Prix de l'Arc de Triomphe at Longchamp Racecourse.
He has presented prestigious awards such as Qatar's Gold Sword and the Emir's Sword at a number of major horse races in Qatar.
With the father Emir, Al-Thani inaugurated the Mall of Qatar, one of the Middle East's largest retail and leisure destinations, in April 2017.
Other notable siblings of Al-Thani include the Deputy Emir of Qatar and Chairman of the Qatar Investment Authority, Abdullah bin Hamad bin Khalifa Al Thani, Chairman of the 2022 FIFA World Cup, Mohammed bin Hamad bin Khalifa Al Thani, President of the Qatar Olympic Committee and owner of Al Shaqab racing, Joaan bin Hamad bin Khalifa Al Thani, Chairperson of Qatar Museums and Doha Film Institute, Al-Mayassa bint Hamad bin Khalifa Al-Thani, Vice Chairperson and CEO of Qatar Foundation, Hind bint Hamad bin Khalifa Al-Thani, Chairman of Aspire Academy and owner of Katara, Jasim bin Hamad bin Khalifa Al Thani, and owner of Al-Anabi racing Khalid bin Hamad Al Thani.
Al-Thani is popular on social media in the Middle East with 100,000 Instagram followers as of May 2017.
Joaan bin Hamad bin Khalifa Al Thani
Sheikh Joaan bin Hamad bin Khalifa Al- Thani( born 23 July 1986) is a close member of Royal House of Thani.
He is the fifth son of former Emir of Qatar, Sheikh Hamad bin Khalifa Al Thani, and the third child of the Emir with his second wife, Sheikha Moza bint Nasser Al Missned.
Mohammed bin Hamad bin Khalifa Al Thani
Sheikh Mohammed bin Hamad bin Khalifa Al Thani( born 18 April 1988) is a member of the Royal House of Thani.
He is the brother of the Emir of Qatar, Sheikh Tamim bin Hamad Al Thani and the son of the former Emir of Qatar, Sheikh Hamad bin Khalifa Al Thani, with his second wife Sheikha Moza bint Nasser.
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.
Khalifa Bin Hamad Bin Khalifa Al Thani
Sheikh Khalifa Bin Hamad Bin Khalifa Al Thani (born 11 November 1991 known as K.H.K.) is a Qatari royal.
Abdullah bin Hamad bin Khalifa Al Thani
Abdullah bin Hamad bin Khalifa Al Thani( born 9 February 1988) is the Deputy Emir of the State of Qatar and unofficial heir presumptive to Emir of Qatar.
He is the son of the 7th and former Emir, Sheikh Hamad bin Khalifa Al Thani, and a younger half- brother of the 8th and current Emir, Sheikh Tamim bin Hamad Al Thani.
His mother is Sheikha Noora bint Khalid Al Thani.
In November 2014, Tamim bin Hamad Al Thani appointed Abdullah to the post of Deputy Emir.

Question: When was Al-Mayassa Bint Hamad Bin Khalifa Al-Thani's father born?
Answer: 1 January 1952