Sir Arthur Ignatius Conan Doyle DL (22 May 1859 – 7 July 1930) was a Scottish physician and writer, most noted for his stories about the detective Sherlock Holmes, which are generally considered a major innovation in the field of crime fiction, and for the adventures of Professor Challenger. He was a prolific writer whose other works include science fiction stories, historical novels, plays and romances, poetry, and non-fiction.
Arthur Conan Doyle was born the third of ten siblings on 22 May 1859 in Edinburgh, Scotland. His father, Charles Altamont Doyle, who was born in England of Irish descent, and his mother, born Mary Foley, who was Irish, had married in 1855. Doyle's father died in 1893, in the Crichton Royal, Dumfries, after many years of psychiatric illness.
Although he is now referred to as "Conan Doyle", the origin of this compound surname (if that is how he meant it to be understood) is uncertain. The entry in which his baptism is recorded in the register of St Mary's Cathedral in Edinburgh gives "Arthur Ignatius Conan" as his Christian name, and simply "Doyle" as his surname. It also names Michael Conan as his godfather.