is there any iconic character created by him?
Yes, Sherlock Holmes.
Arthur Conan Doyle
Sir Arthur Ignatius Conan Doyle (22 May 1859 – 7 July 1930) was a British writer and medical doctor. He created the character Sherlock Holmes in 1887 for "A Study in Scarlet", the first of four novels and fifty-six short stories about Holmes and Dr. Watson. 
when did the battle of pontvallain take place? 4 December 1370 who battled against whom? French army and  English force. who led the former? Bertrand du Guesclin who won the battle? The French army. has the leader of the army been honored with any rank? Yes, he was a Breton knight. when was he appointed as one? 1354 were there any references of him in books or in movies? Yes, in "The White Company". is it a film? No, a novel. who is the novelist? Arthur Conan Doyle.
wiki:22067960
Arthur Conan Doyle [SEP] Introduction
Sir Arthur Ignatius Conan Doyle (22 May 1859 – 7 July 1930) was a British writer and medical doctor. He created the character Sherlock Holmes in 1887 for "A Study in Scarlet", the first of four novels and fifty-six short stories about Holmes and Dr. Watson. The Sherlock Holmes stories are generally considered milestones in the field of crime fiction. Doyle was a prolific writer; other than Holmes stories, his works include fantasy and science fiction stories about Professor Challenger and humorous stories about the Napoleonic soldier Brigadier Gerard, as well as plays, romances, poetry, non-fiction and historical novels. One of Doyle's early short stories, "J.