Maurice Costello
Costello was born in Pittsburgh, Pennsylvania to Irish immigrants Ellen (née Fitzgerald; born 1853) and Thomas Costello (born 1852). He made his film debut in 1908, but was long believed to have debuted in "Adventures of Sherlock Holmes; or, Held for Ransom" (1905), supposedly playing the lead in what is regarded as the first serious film to feature the character of Sherlock Holmes, since it was preceded only by the 30-second comedy film "Sherlock Holmes Baffled" (1900). However, Holmesian scholar Leslie S. Klinger has written that the identification of Costello in the role is flawed. Klinger states that the first identification of Costello with the role was in Michael Pointer's "Public Life of Sherlock Holmes" published in 1975 but Pointer later realized his error and wrote to Klinger stating
Harry Potter influences and analogues
Chris Columbus, who directed the first two "Harry Potter" film adaptations, has cited the 1985 film "Young Sherlock Holmes", which he wrote, as an influence in his direction for those films. "That was sort of a predecessor to this movie, in a sense", he told the BBC in 2001, "It was about two young boys and a girl in a British boarding school who had to fight a supernatural force." Scenes from "Young Sherlock Holmes" were subsequently used to cast the first Harry Potter film. On 3 January 2010, Irish journalist Declan Lynch (writing in "The Sunday Independent") stated that "there's more than a hint of young Sherlock evident in Harry".