Question: Sword Song was written by the author who was best known for books about which rifleman?

Context articles: The Sword of Paros
Welleran Poltarnees
Bernard Cornwell
Amy Krouse Rosenthal
Nancy Yi Fan
Sword Song (novel)
The Blue Sword
David Bach (author)
John Clifton Wright
Lieut. Gullivar Jones: His Vacation

The Sword of Paros (パロスの剣 , Parosu no Ken ) is a 1986 shoujo historical fantasy manga composed of three volumes written by Kaoru Kurimoto, a science fiction author best known for "Guin Saga", and illustrated by Yumiko Igarashi, best known for "Candy Candy".
 The plot of "The Sword of Paros" is also strongly centred on the romance of the protagonists, one of whom, like Oscar in "The Rose of Versailles", is trying to pass as a man.
Welleran Poltarnees is the pen name of Harold Darling, an author who is best known for having written numerous "blessing books" that employ turn of the 20th century artwork.
 This pen name is based on two of Lord Dunsany's most famous stories: "The Sword of Welleran" and "Poltarnees, Beholder of Ocean".
Bernard Cornwell, OBE (born 23 February 1944) is an English author of historical novels and a history of the Waterloo Campaign.
 He is best known for his novels about Napoleonic Wars rifleman Richard Sharpe.
 Cornwell has written historical novels primarily of English history in five series and one series of contemporary thriller novels.
 A feature of his historical novels is an end note on how the novel matches or differs from history, for the re-telling, and what one might see at the modern site of the battles described in the novel.
 One series of historical novels is set in the American Civil War.
 He wrote a nonfiction book on the battle of Waterloo, in addition to the fictional story of the famous battle in the Sharpe Series.
 Two of the historical novel series have been adapted for television; the Sharpe television series by ITV and "The Last Kingdom" by BBC.
 He lives in the US with his wife.
 He alternates between Cape Cod, Massachusetts and Charleston, South Carolina.
Amy Krouse Rosenthal (April 29, 1965 – March 13, 2017) was an American author of both adult and children's books, a short film maker, and radio show host.
 She is best known for her memoir "Encyclopedia of an Ordinary Life", her children's picture books, and the film project "The Beckoning of Lovely".
 She was a prolific writer, publishing more than 30 children's books between 2005 and her death in 2017.
 She is the only author to have three children's books make the Best Children's Books for Family Literacy list in the same year.
 She was a contributor to Chicago's NPR affiliate WBEZ, and to the TED conference.
Nancy Yi Fan (born August 26, 1993 ) is a Chinese American author who is best known for writing a series that currently consists of the novels "Swordbird", "Sword Quest", and "Sword Mountain".
Sword Song is the fourth historical novel in The Saxon Stories by Bernard Cornwell, published in 2007.
 Uhtred leads battles against the Danes, as King Alfred strengthens the defences of his kingdom of Wessex in the 9th century.
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.
David L. Bach is an American financial author, television personality, motivational speaker, entrepreneur and founder of FinishRich.com.
 Bach, is best known for his "Finish Rich Book Series" and "Automatic Millionaire Series" of motivational financial books under the Finish Rich® Brand.
 He has written 12 books since 1998 with over seven million copies in print.
 Eleven of Bach’s books have been national bestsellers, including nine consecutive New York Times bestsellers, two of which were consecutive #1 "New York Times" bestsellers ("The Automatic Millionaire" and "Start Late, Finish Rich").
 Bach has had four of his books "Smart Women Finish Rich, Smart Couples Finish Rich, The Automatic Millionaire and The Finish Rich Workbook" appear simultaneously on the "Wall Street Journal, BusinessWeek, and USA Today" bestseller lists.
 Eleven of Bach’s books have been published from Random House (Broadway Books).
 Bach's first book "Smart Women Finish Rich" was published in 1998, and appeared on the bestseller lists for a decade.
 His most recent book "Debt Free For Life" (2011) was published by Crown Business Books, and appeared simultaneously on the "New York Times, "Wall Street Journal" and "USA Today" bestseller lists.
John C. Wright (Best known in the trades as Capt. John) John C. Wright is an American author of cruising books.
 Best known for his books about living aboard and cruising America's Great Loop.
 His best selling books include "Once Around Is Not Enough" and "America's Great Loop & Beyond" published by Anchor Publishing.
 His book "America's Great Loop and Beyond" earned him 2013, 2014 and 2015 Best Selling author in the Nautical Market.
 In 2016 his "Once Around Is Not Enough" became the #1 BEST SELLER and winner of the Boaters' Choice Book of the Year.
 Capt. John is best known for his books and website about living aboard and cruising America's Great Loop. "
Publishers Weekly" said he "may be this century's most influential author in the nautical market."
Lieut. Gullivar Jones: His Vacation is the last novel by Edwin Lester Arnold, combining elements of both fantasy and science fiction, first published in 1905.
 Its lukewarm reception led him to stop writing fiction.
 It has since become his best known work, and is considered important in the development of 20th century science fiction in that it is a precursor and likely inspiration to Edgar Rice Burroughs's classic "A Princess of Mars" (1917), which spawned the sword and planet genre.
 Ace Books reprinted Arnold's novel in paperback in 1964, retitling it "Gulliver" ["sic"] "of Mars".
 A more recent Bison Books edition (2003) was issued as "Gullivar of Mars", adapting the Ace title to Arnold's spelling.