Question: Which novelist was born first out of Helen Zahavi and Richard Llewellyn?
Context: This is a list of United States Ambassadors to Mongolia.  The United States established diplomatic relations with then-People's Republic of Mongolia on January 27, 1987.  The Embassy in Ulaanbaatar was opened Apr 17, 1988, with Steven Mann as Chargé d'Affaires ad interim.  Richard Llewellyn Williams was the first ambassador to the Republic, and resided in the District of Columbia.  The current Mongolian ambassador to the United States is Altangerel Bulgaa, who succeeded Khasbazaryn Bekhbat when he was appointed on December 7, 2012.  The U.S. maintains its embassy in Ulan Bator. Richard Dafydd Vivian Llewellyn Lloyd (8 December 1906 – 30 November 1983), known by his pen name Richard Llewellyn, was a British novelist. Dirty Weekend is a British film directed by Michael Winner, based on the novel of the same name by Helen Zahavi.  It was banned from video release for two years by the BBFC for its violent and <nowiki>sexual</nowiki> content. Bronwen (] ) is a Welsh feminine given name.  It is closely associated with the similar name "Branwen", which appears in medieval Welsh literature.  Used in Wales since the 19th century, it was introduced to the English-speaking public at large by a character in the Richard Llewellyn novel "How Green Was My Valley" (1939). Richard Llewellyn "Rich" Brooks (born August 20, 1941) is a retired American football player and coach.  He was the head coach at the University of Oregon from 1977 to 1994, the National Football League's St. Louis Rams from 1995 to 1996, and the University of Kentucky from 2003 to 2009. How Green Was My Valley is a BBC Television serial based on the novel by Richard Llewellyn, and features one of the last performances by Stanley Baker.  It was first shown in the UK from 29 December 1975 in six weekly parts, while producer Martin Lisemore also cast Siân Phillips in his next production, "I Claudius" (1976). Helen Zahavi (born 1966) is an English novelist and screenwriter born and educated in London.  Her father was sent to Britain with the Polish Army during the Second World War and her mother's parents came from Odessa.  Before becoming a writer Zahavi worked as a Russian translator, and has spent several years living in Paris. Richard Llewellyn Williams, (born December 28, 1929) was a career member of the Senior Foreign Service who, over three decades as a career U.S. diplomat, opened the first American consulate in mainland China since the 1940s (in Guangzhou, 1979), served as the first U.S. Ambassador to the Mongolian People's Republic from 1988 to 1990 (Diplomatic relations were established with the Mongolian People's Republic in January 1987) and then was named Consul General in Hong Kong from 1990 to 1993.  Williams was also director of Chinese affairs at the U.S. State Department during the Tiananmen crisis. Dirty Weekend (1991) is a novel by Helen Zahavi, adapted into a film two years later by Zahavi and director Michael Winner.  In the US it was first published under the title The Weekend; some editions are subtitled "A Novel of Revenge". How Green Was My Valley is a 1939 novel by Richard Llewellyn, narrated by Huw Morgan, the main character, about his Welsh family and the mining community in which they live.  The author had claimed that he based the book on his own personal experiences but this was found to be untrue after his death; Llewellyn was English-born and spent little time in Wales, though he was of Welsh descent.  Llewellyn gathered material for the novel from conversations with local mining families in Gilfach Goch.
Answer: Richard Llewellyn