Question: Who wrote the novel the theatre production where Thomasin Lawson played Susan Pevensie was based on?

Context paragraphs:
Doc Lawson: Aldophus “Doc” Lawson (born February 11, 1958 in Liberia) is a former American soccer defender best known for his long indoor career.  Lawson played the third most games in the history of the original MISL.  He also spent four seasons in the North American Soccer League.  Known for his tenacious defending, Doc earned the nickname, The Indoor Warrior.  Lawson earned three caps with the U.S. national team in 1979, was a member of the 1980 U.S. Olympic soccer team and was with the U.S. Futsal team when it took third place in the 1989 FIFA Futsal World Championship.

Jim Lawson (American football): James Willmer Lawson (March 11, 1902 – January 3, 1989) was an American football end who played one season with the New York Yankees of the National Football League (NFL).  Lawson played college football for the Stanford football team of Stanford University.  He was a consensus first-team All-American in 1924.  He was also a member of the Los Angeles Wildcats of the American Football League.

Hector Lawson: Hector Lawson (born 21 May 1896, died 1971) was a Scottish born left-wing footballer.  He was described by the Derby Daily Telegraph as 'an outside left who has already made a deep impression, and has speed, ball control, and confidence'.  He played for a number of clubs including Rangers, Liverpool, Aberdeen and Shamrock Rovers.  Born in Shettleston, Lawson played under Bill Struth at Rangers, during the 20th century.

Susan Pevensie: Susan Pevensie is a fictional character in C. S. Lewis's "The Chronicles of Narnia" series.  Susan is the elder sister and the second eldest Pevensie child.  She appears in three of the seven books—as a child in "The Lion, the Witch and the Wardrobe" and "Prince Caspian", and as an adult in "The Horse and His Boy".  She is also mentioned in "The Voyage of the Dawn Treader" and "The Last Battle".  During her reign at the Narnian capital of Cair Paravel, she is known as Queen Susan the Gentle or Queen Susan of the Horn.  She was the only Pevensie that survived the train wreck (because she was not on the train or at the station) on Earth which sent the others to Narnia after "The Last Battle".

Anna Popplewell: Anna Katherine Popplewell (born 16 December 1988) is a British film, television and theatre actress.  She is known for her role as Susan Pevensie in ""The Chronicles of Narnia" film series" since 2005, as Chyler Silva in "" since 2012 and Lady Lola in "Reign" from 2013–2016.

Bob Lawson: Robert Baker "Bob" Lawson (August 23, 1875 – October 28, 1952) was a Major League Baseball pitcher.  Lawson played for the Boston Beaneaters in 1901 and the Baltimore Orioles in 1902 .  In nine career games, he had a 2-4 record, with a 3.66 ERA.  He batted and threw right-handed.

Thomasin Lawson: Thomasin Miranda "Thomy" Lawson is an English actress, born in Surrey in 1997, currently studying Experimental Psychology in her second year at Bristol University, she attended Surbiton High School for 7 years and during this time was a key participant in the youth programme of the Rose Theatre, Kingston where she has starred in several smaller scale productions as well as in the theatre's critically acclaimed 2014 production of The Lion, the Witch and the Wardrobe as one of the leading characters: Susan Pevensie.

The Lion, the Witch and the Wardrobe: The Lion, the Witch and the Wardrobe is a fantasy novel for children by C. S. Lewis, published by Geoffrey Bles in 1950.  It is the first published and best known of seven novels in "The Chronicles of Narnia" (1950–1956).  Among all the author's books it is also the most widely held in libraries.  Although it was written as well as published first in the series, it is volume two in recent editions, which are sequenced by the stories' chronology (the first being "The Magician's Nephew").  Like the others, it was illustrated by Pauline Baynes, and her work has been retained in many later editions.

Ty Lawson: Tywon Ronell Lawson (born November 3, 1987) is an American professional basketball player for the Shandong Golden Stars of the Chinese Basketball Association (CBA).  Lawson played college basketball for North Carolina where he won a national championship his junior year.  He was drafted with the 18th overall pick in the 2009 NBA draft by the Minnesota Timberwolves and was immediately traded to the Denver Nuggets.

Janelle Lawson: Janelle Lawson (born 9 August 1987) is an Australian netball player in the ANZ Championship.  Lawson previously played for the AIS Canberra Darters in the Commonwealth Bank Trophy.  In 2008 and 2009, Lawson played for the Queensland Firebirds at Goal Attack position.  In 2010, Lawson played for the West Coast Fever.  In 2011, Lawson currently plays for the Spinning SnapKicks at the Melville Indoor Recreation Centre.  Her career peaked when she won a premiership with this side earlier this year.

Supporting paragraphs: Thomasin Lawson The Lion, the Witch and the Wardrobe
Answer: C. S. Lewis