Giulio d'Este (July 13, 1478 – March 24, 1561) was the illegitimate son of Ercole I d'Este, Duke of Ferrara, the result of an affair with Isabella Arduin, a lady in the service of Ercole's wife.
 He is known for the conflicts he had with his half brother Ippolito d'Este, which culminated in a failed conspiracy that Giulio conducted against both Ippolito and another half brother Alfonso I d'Este, then Duke of Ferrara.
Prince "Dasho" Jigyel Ugyen Wangchuck (born 16 July 1984) was the heir presumptive to the throne of Bhutan until 5 February 2016, when his nephew, his brother Jigme Khesar Namgyel Wangchuck's first son, Jigme Namgyel Wangchuck was born.
Lamay Monastery or Lamay Gonpa is a Buddhist monastery in Bumthang, Bhutan.
 It is located four kilometers (two and a half miles) above the Jakar Dzong and was built by the Trongsa Penlop, Sonam Drugel, the great-grandfather of King Ugyen Wangchuck in the 19th century.
 Wangchuck restored the building and it was used as the residence of his two daughters.
 The palace’s main tower was destroyed due to structural problems.
 Today the building houses the Forestry Institute.
The Half Brother (Norwegian: Halvbroren ) is a 2001 novel by the Norwegian writer Lars Saabye Christensen.
 The story follows a man who grows up in Oslo after World War II, with his mother, grandmother, great grandmother and half brother.
 The novel was published in Norwegian by Cappelen in 2001, and in English for the first time in 2003.
 It received the Brage Prize and the Nordic Council Literature Prize.
 A television series based on the novel was broadcast on NRK in 2013.
Jigme Khesar Namgyel Wangchuck (འཇིགས་མེད་གེ་སར་རྣམ་རྒྱལ་དབང་ཕྱུག་ , Wylie: "jigs med ge sar rnam rgyal dbang phyug" born 21 February 1980) is the current reigning Druk Gyalpo or "Dragon King" of the Kingdom of Bhutan.
 After his father Jigme Singye Wangchuck abdicated the throne in his favour, he became King on 9 December 2006.
 A public coronation ceremony was held on 6 November 2008, an auspicious year that marked 100 years of monarchy in Bhutan.
Le Susuga Malietoa Talavou Tonumaipe’a (ca. 1810 - November 9 1880) was installed as "King" of Samoa to the western world on August 28, 1879 until his death on November 9, 1880.
 Since Malietoa Talavou's half brother's (same father M. Vai'inupo) death, Malietoa Moli in 1860, ongoing wars due to power and authority struggle between Talavou and Laupepa (M. Talavou's nephew-his half brother M. Moli's eldest son) over the next Malietoa title holder and the gaining of support by the districts of Samoa.
 Family rivalry existed as did a 30-year age difference drew a wedge between Malietoa Laupepa and Malietoa Talavou.
 They were known to be longtime rivals over the Malietoa title.
Half Brother is a vinyl LP record album by the band Half Brother.
 It is the first album by the BAFTA, Brit, Emmy, and Gramophone award-winning composer Howard Goodall.
Princess "Ashi" Sonam Dechen Wangchuck (born August 5, 1981) is a princess of Bhutan.
 She is the daughter of the 4th King of Bhutan Jigme Singye Wangchuck and half-sister of the 5th King, Jigme Khesar Namgyel Wangchuck.
 She has a degree in international relations from Stanford University and a masters in law from Harvard Law School.
 She has also clerked for the Royal High Court of Bhutan.
 She currently works at the Judiciary of the Kingdom of Bhutan as President of the Bhutan National Legal Institute.
Mindon Min (Burmese: မင်းတုန်းမင်း , ] ; 8 July 1808 – 1 October 1878) was the penultimate king of Burma (Myanmar) from 1853 to 1878.
 He was one of the most popular and revered kings of Burma.
 Under his half brother King Pagan, the Second Anglo-Burmese War in 1852 ended with the annexation of Lower Burma by the British Empire.
 Mindon and his younger brother Kanaung overthrew their half brother King Pagan.
 He spent most of his reign trying to defend the upper portion of his country from British encroachments, and to modernize his kingdom.
Sheikh Falah bin Zayed bin Sultan bin Zayed bin Khalifa Al Nahyan (Arabic: فلاح بن زايد سلطان آل نهيان‎ ‎ ) (born 7 November 1970) is a member of Al Nahyan the ruling royal family of Abu Dhabi.
 He is the son of Zayed bin Sultan Al Nahyan, the founder, first president of United Arab Emirates and emir of Abu Dhabi.
 He is the half brother of Sheikh Khalifa bin Zayed Al Nahyan, the current President of the United Arab Emirates.
 He is also half brother of Sheikh Mohammed bin Zayed Al Nahyan, Crown Prince of Abu Dhabi and Deputy Supreme Commander of the U.A.E Armed Forces.

Question: When was Sonam Dechan Wangchuck's half brother born?
Answer: 21 February 1980