Question: Cart and Cwidder is a fantasy novel for young adults by an author born in which year ?

Context articles: Magic or Madness
Cart and Cwidder
Julie Bertagna
Michael Cart
Katherine Elizabeth Krohn
How Beautiful the Ordinary
Diana Wynne Jones
Steven Herrick
The Blue Sword
Archer's Goon

Magic or Madness is a fantasy novel for young adults by Justine Larbalestier.
 First published in 2005, it is the first installment in the Magic or Madness trilogy.
 The novel won the 2007 Andre Norton Award for Young Adult Science Fiction and Fantasy.
Cart and Cwidder is a fantasy novel for young adults by the British author Diana Wynne Jones.
 It is the first book published in the "Dalemark Quartet", although chronologically it is the third in the series, coming in time hundreds of years after "The Spellcoats" and a year or so after "Drowned Ammet".
Julie Bertagna (born in 1962) is a Scottish author who has written real life and science fiction novels for both children and young adults.
 Her books have been shortlisted for several literature awards, including the Carnegie Medal and her novel "Exodus" was the winner of the Lancashire County Library Children’s Book of the Year Award.
 "Soundtrack", her second novel for young adults, won a Scottish Arts Council Award, the second highest award ever given to a Scottish children's writer.
Michael Cart, born on March 6, 1941 in Logansport, Indiana, United States is an author and expert in children's and young adult literature.
 He earned a degree in Library Science from Columbia University in 1964 and a degree in Journalism from Northwestern University.
 From 1964 to 1967 he served in the United States Army.
 Cart received the Grolier Award in 2000 and was the inaugural recipient of the YALSA/Greenwood Publishing Group Service to Young Adults Award in 2008.
Katherine Elizabeth Krohn (born 1961) is an American author born in Bitburg, Germany to American-born parents.
 Krohn is a prolific writer of books for children and young adults.
 Writing for young reader's series such as USA Today Lifeline Biographies and A&E Biography (published by Lerner Publishing Group), her works include many well-reviewed titles, such as the Carter G. Woodson Honor Book "Ella Fitzgerald: First Lady of Song", and the Oregon Book Award contender "Women of the Wild West".
 In recent years, Krohn ventured from the biographical format to create graphic science and graphic history titles for Capstone Press and Gale Cengage Learning.
 She has authored metaphysical titles about fortune-telling and ghosts, fiction, and books about contemporary social issues.
How Beautiful the Ordinary: Twelve Stories of Identity is an anthology of LGBTQ short stories for young adults edited by American author Michael Cart.
 It was first published in 2009.
 The anthology contains an introduction by Cart, 11 short stories, and one novella by acclaimed lesbian and gay authors.
Diana Wynne Jones (16 August 1934 – 26 March 2011) was a British writer, principally of fantasy novels for children and adults.
Steven Herrick (born in Brisbane, 1958) is an Australian poet and author.
 Herrick has published twenty-two books for adults, young adults and children.
 He is widely regarded as a pioneer of verse-novels for children and young adults.
The Blue Sword is a fantasy novel written by American author Robin McKinley and published by Greenwillow Books in 1982.
 The novel "The Hero and the Crown" serves as a prequel.
 "The Blue Sword" has received several awards, including: Newbery Honor Award, ALA Best Book for Young Adults and the ALA Notable Children's Book.
 The story, told in the third-person omniscient perspective, is of a young woman named Angharad Crewe, called Harry, who becomes a warrior in her adopted homeland of Damar.
Archer's Goon is a 1984 fantasy novel by Diana Wynne Jones both for the young adult and adult markets.
 It was nominated for the 1985 World Fantasy Award for Best Novel and is listed as an ALA Notable Children's Book, an ALA Best Book for Young Adults, and a Boston Globe-Horn Book Award Honor Book.